I absolutely love this gym! The sense of community is unparalleled, making every workout enjoyable. The welcoming atmosphere empowers members, fostering confidence, and the dedicated staff truly cares about helping everyone achieve their strength and fitness goals. The friendly competitions and challenges that this gym provides takes the experience to another level. A five-star experience all aro... More

I absolutely love this gym! The sense of community is unparalleled, making every workout enjoyable. The welcoming atmosphere empowers members, fostering confidence, and the dedicated staff truly cares about helping everyone achieve their strength and fitness goals. The friendly competitions and challenges that this gym provides takes the experience to another level. A five-star experience all around! Less

Great Gym. Big up --- Brenner, Vickie, Sidney, Danielle - all fantastic trainers. They push and motivate you when you need the most.

This place is just special. I came in never having lifted a weight in my life and desperately looking for a change in my exercise routine. As soon as I joined in, I felt supported and cared for. All the trainers and staff make sure you are comfortable and go over every single thing you need to know. They make me feel safe and confident. I feel great and strong and I go as often as I can becomes ... More

This place is just special. I came in never having lifted a weight in my life and desperately looking for a change in my exercise routine. As soon as I joined in, I felt supported and cared for. All the trainers and staff make sure you are comfortable and go over every single thing you need to know. They make me feel safe and confident. I feel great and strong and I go as often as I can becomes the community is so great. Less

Awesome crew. Awesome workouts. Makes working out fun.

Underlying Strength provides a complete workout experience. Not only are the workouts challenging, they are a lot of fun, too! The trainers are very knowledgeable and attentive, making sure proper technique is followed to avoid injury and promote personal growth. I am so grateful to each and every coach along with the owner, Sidney, for creating a positive, motivating environment for people at a... More

Underlying Strength provides a complete workout experience. Not only are the workouts challenging, they are a lot of fun, too! The trainers are very knowledgeable and attentive, making sure proper technique is followed to avoid injury and promote personal growth. I am so grateful to each and every coach along with the owner, Sidney, for creating a positive, motivating environment for people at all levels of fitness. This is by far, the best gym in the Yardley/Newtown area. Less

The gym is friendly and inclusive! The trainers run great classes, provide guidance to prevent injury and support individual fitness goals. Open gym opportunity for the work at homes that need a break! Glad to be part of the group!!... More

The gym is friendly and inclusive! The trainers run great classes, provide guidance to prevent injury and support individual fitness goals. Open gym opportunity for the work at homes that need a break! Glad to be part of the group!! Less

Last year I weighed 201 lbs. The doctor told me I had high cholesterol and was obese according to my height. I joined Underlying Strength out of shape and not knowing what to expect. My first class was a little intimidating but the trainers reassured me that I only had to do what I could and they had my back. Even the other members were super supportive in guiding and encouraging me. What this pl... More

Last year I weighed 201 lbs. The doctor told me I had high cholesterol and was obese according to my height. I joined Underlying Strength out of shape and not knowing what to expect. My first class was a little intimidating but the trainers reassured me that I only had to do what I could and they had my back. Even the other members were super supportive in guiding and encouraging me. What this place has done for me is far more that I expected. I have more energy throughout the day, I’m more focused, my moods are more stable, and I feel so much more comfortable in my clothes. Since I’ve started I lost 30lbs and counting!!! If you are thinking joining a gym I highly recommend Underlying Strength. Keep an open mind and get out of your own way!!! Less

The thought of joining a work out class always scared the hell out of me, but I finally knew I couldn't do it on my own. Instantly at U.S. I realized there was never anything to fear at all. Completely non judgmental environment with a knowledgeable staff that ensures you'll never feel lost & leave each class feeling great.... More

The thought of joining a work out class always scared the hell out of me, but I finally knew I couldn't do it on my own. Instantly at U.S. I realized there was never anything to fear at all. Completely non judgmental environment with a knowledgeable staff that ensures you'll never feel lost & leave each class feeling great. Less

Great place with great trainers!!

I live in Florida but I use workouts Sid posts online or I try to recreate a session I see him facilitating in his videos. I’m using his BIG BOOK of 64 exercises. That’s the beauty of social media and a trainer who is motivated to post regularly. A gym is a place people go to workout but a school, a facility, a dojo, a training academy is where people use exercise to build community, remain accou... More

I live in Florida but I use workouts Sid posts online or I try to recreate a session I see him facilitating in his videos. I’m using his BIG BOOK of 64 exercises. That’s the beauty of social media and a trainer who is motivated to post regularly. A gym is a place people go to workout but a school, a facility, a dojo, a training academy is where people use exercise to build community, remain accountable, to help themselves and others. Underlying Strength is definitely the latter. Less

You will not find a better workout in the area.

Just a great place, can not say enough how much I have loved this place at 7am mon-sat!. Strength is king for staying young, raising metabolism and improving shape....this place is just fabulous. You get 3 days strength classes and three days aerobic conditioning per week. That is 6 awesome days of fitness. Hard workouts, never boring/huge variety, great motivational instructors. Sundays o... More

Just a great place, can not say enough how much I have loved this place at 7am mon-sat!. Strength is king for staying young, raising metabolism and improving shape....this place is just fabulous. You get 3 days strength classes and three days aerobic conditioning per week. That is 6 awesome days of fitness. Hard workouts, never boring/huge variety, great motivational instructors. Sundays off. Less

A couple of years ago a massage therapist referred me to Sidney because he practiced FST (Fascia Stretch Therapy). I am an older women who has several issues including arthritis and lack of flexibility in my hips and legs that chiropractic and massage was not helping. I hobbled into Sidney and literally walked out! I started going to Sidney on a regular basis (at first quite frequently and now... More

A couple of years ago a massage therapist referred me to Sidney because he practiced FST (Fascia Stretch Therapy). I am an older women who has several issues including arthritis and lack of flexibility in my hips and legs that chiropractic and massage was not helping. I hobbled into Sidney and literally walked out! I started going to Sidney on a regular basis (at first quite frequently and now a couple of times a month) and I am now, not completely pain free (he's not a miracle worker), but I have about 85% of my flexibility back, my body doesn't ache constantly from being tight and cramped and I am back to exercising and the recumbant bike. I highly recommend you give Sidney a try. Whether you have chronic issues like me or occassional troubled areas his gentle, but very skilled therapy will likely help. He made a world of difference in my life. I'm sold on both FST and Sidney. Thanks Sid! Less

Great powerlifting coaching! Very cool people! Awesome gym experience!!

Sid is a phenomenal owner/coach. He takes pride in what he does and it shows. His infectious personality and positive attitude have certainly attracted like minded people to this wonderful gym. The coaches/staff (Vicky, Debbie, Danielle, and Jenny) are very knowledgeable and enjoy what they do. We have all been to workout classes where the routine it’s repetitive, the coaches are overworked, and ... More

Sid is a phenomenal owner/coach. He takes pride in what he does and it shows. His infectious personality and positive attitude have certainly attracted like minded people to this wonderful gym. The coaches/staff (Vicky, Debbie, Danielle, and Jenny) are very knowledgeable and enjoy what they do. We have all been to workout classes where the routine it’s repetitive, the coaches are overworked, and the workout/membership follows the culture. That is not the case at Underlying Strength. My Fiancé and I are so thankful we joined. Less

Regular morning gym-goer for >9 years; made a switch to US in Mar 2022: best decision my fiance and I could have made!! Always upbeat music, coaches and staff interactive/motivating/knowledgeable, ever-changing daily schedule. Incredibly clean facility. Able to accommodate varying levels of athletes.... More

Regular morning gym-goer for >9 years; made a switch to US in Mar 2022: best decision my fiance and I could have made!! Always upbeat music, coaches and staff interactive/motivating/knowledgeable, ever-changing daily schedule. Incredibly clean facility. Able to accommodate varying levels of athletes. Less

What can I say that everyone else hasn’t said already. For someone that hasn’t been in gym for 20 plus years, they helped through every exercise and made me feel right at home. I love all the coaches! This is your gym!... More

What can I say that everyone else hasn’t said already. For someone that hasn’t been in gym for 20 plus years, they helped through every exercise and made me feel right at home. I love all the coaches! This is your gym! Less

The trainers are very helpful with educating you on the right form to use during class, and substituting out or altering certain exercises that fit your needs. The classes are upbeat and everyone is friendly!... More

The trainers are very helpful with educating you on the right form to use during class, and substituting out or altering certain exercises that fit your needs. The classes are upbeat and everyone is friendly! Less

I have finally found the perfect gym. Underlying Strength has everything I’ve been looking for at other gyms with no success. The classes are a perfect mix of strength and aerobics, led by knowledgeable and dynamic coaches. The gym is fully equipped with everything you need.... More

I have finally found the perfect gym. Underlying Strength has everything I’ve been looking for at other gyms with no success. The classes are a perfect mix of strength and aerobics, led by knowledgeable and dynamic coaches. The gym is fully equipped with everything you need. Less

Excellent trainers. Pay attention to every one in the class and push each member to their max potential no matter their skill level. Have a great time every class.... More

Excellent trainers. Pay attention to every one in the class and push each member to their max potential no matter their skill level. Have a great time every class. Less

Great classes, great, friendly staff. Challenging workouts that you can take at your own pace

Hands down the best gym ever! The community of people there make you feel very welcome and included. The coaches are top notch. I go to fit camp 5-6 days a week and no class is ever the same. I’ve never been committed to a gym for more than 3-4 months but I’ve been committed to this gym for over 1 year. 10/10 recommend!!!!... More

Hands down the best gym ever! The community of people there make you feel very welcome and included. The coaches are top notch. I go to fit camp 5-6 days a week and no class is ever the same. I’ve never been committed to a gym for more than 3-4 months but I’ve been committed to this gym for over 1 year. 10/10 recommend!!!! Less

Great support and hard workouts!

Awesome trainers!!!! Joined a few months ago and already getting stronger and in shape! Be prepared to sweat...lol. Best gym ever

Very friendly staff and the classes are amazing 😄 trainers they really give u a work out ! It worth the money every body friendly there ! I love it there I was giving a 21 day trial ! Very positive environment ! I think I found a new home / gym no more looking !... More

Very friendly staff and the classes are amazing 😄 trainers they really give u a work out ! It worth the money every body friendly there ! I love it there I was giving a 21 day trial ! Very positive environment ! I think I found a new home / gym no more looking ! Less

Very impressed with the workouts and the instructors.

I finally found a gym where I don't feel invisible. Underlying Strength has a supportive group of coaches and members at all skill levels. There are no cliques here, just the US Team. And if your a member you truly feel like part of that team. They work with all skill levels. The many coaches will be willing and able to help you tackle your fitness goals; from weight loss, nutrition balance, or e... More

I finally found a gym where I don't feel invisible. Underlying Strength has a supportive group of coaches and members at all skill levels. There are no cliques here, just the US Team. And if your a member you truly feel like part of that team. They work with all skill levels. The many coaches will be willing and able to help you tackle your fitness goals; from weight loss, nutrition balance, or even if your wanting to become a weightlifter. There is something here for everyone, especially community!!! I highly recommend trying out a class and enjoying the welcoming feeling they offer. Less

I love US! The trainers/coaches are amazing, they are always supportive, give you an extra push, and they get just excited as you do when you crush your goals. Everyday is something different so you are never stuck in the same routine. You WILL see results. I highly recommend giving this place a try, I did one trial class and I was hooked. #sidsaysproveit... More

I love US! The trainers/coaches are amazing, they are always supportive, give you an extra push, and they get just excited as you do when you crush your goals. Everyday is something different so you are never stuck in the same routine. You WILL see results. I highly recommend giving this place a try, I did one trial class and I was hooked. #sidsaysproveit Less

This place is a great Yardley/Lower Makefield gym. Great trainers and classes. Very reasonable prices. Try it out if you are looking for a change or to get in shape!... More

This place is a great Yardley/Lower Makefield gym. Great trainers and classes. Very reasonable prices. Try it out if you are looking for a change or to get in shape! Less

Best gym hands down! In the past I would find myself getting lost at gyms not knowing exactly what and how to exercise in order to achieve my goals. At underlying strength I attend classes 5-6 times a week and my progress has been amazing! Each day they focus on different parts of the body for strength training, along with conditioning and circuit training days. Sidney and team are all so motivat... More

Best gym hands down! In the past I would find myself getting lost at gyms not knowing exactly what and how to exercise in order to achieve my goals. At underlying strength I attend classes 5-6 times a week and my progress has been amazing! Each day they focus on different parts of the body for strength training, along with conditioning and circuit training days. Sidney and team are all so motivating and always make classes exciting and fun! This is not just a gym for me, it’s definitely become my favorite place to be at! Less

Great place !!!!! No judging at all!! The staff is great!!

This place totally transitioned my body and my attitude. Thank you for everything you do.

They put you to the test, yet I see all levels in every class. Friendly staff & members

Great attitude and attention to individuals needs and cares.

Awesome gym and even more awesome trainers. Highly recommend if you're A - serious about your health and wellness, and B - willing to put the work in 👍... More

Awesome gym and even more awesome trainers. Highly recommend if you're A - serious about your health and wellness, and B - willing to put the work in 👍 Less

Great event, good energy

Great team oriented fitness routines orchestrated by a group of motivated coaches who are dedicated to pushing you to the next level!!!! If you have any type of fitness goal/goals that you are serious about obtaining I RECOMMEND THAT YOU SIGN UP NOW!!! #goals#letsgo#underlyingstrength... More

Great team oriented fitness routines orchestrated by a group of motivated coaches who are dedicated to pushing you to the next level!!!! If you have any type of fitness goal/goals that you are serious about obtaining I RECOMMEND THAT YOU SIGN UP NOW!!! #goals#letsgo#underlyingstrength Less

They encourage me in my belief that I will one day be able to jump rope again without my gut bouncing up and down.

Great place to work out. No judgement zone. Everyone is rooting for you I consider them my Fitfam. The trainers always learning new things and attending classes. Never have I had a class repeated. Trainers correct your form and if you can’t do something they will give you something else. Don’t be afraid to try something. If you fall off the wagon they are there to welcome you back and get you mot... More

Great place to work out. No judgement zone. Everyone is rooting for you I consider them my Fitfam. The trainers always learning new things and attending classes. Never have I had a class repeated. Trainers correct your form and if you can’t do something they will give you something else. Don’t be afraid to try something. If you fall off the wagon they are there to welcome you back and get you motivated again...great place and great people. Nutritionist is there to answer all your questions and guide you!! All under one house! Less

Best gym in the area! I tried for years to get a solid routine down going to a regular gym like Planet Fitness, and never could hold myself accountable and also never felt like I was actually learning anything about fitness and my body. Ever since I started training here, I have learned workouts that work well, how far I can push myself, and I am actually excited to work out each day. I have had ... More

Best gym in the area! I tried for years to get a solid routine down going to a regular gym like Planet Fitness, and never could hold myself accountable and also never felt like I was actually learning anything about fitness and my body. Ever since I started training here, I have learned workouts that work well, how far I can push myself, and I am actually excited to work out each day. I have had many friends start coming with me who also love it and have converted their gyms as well. It is THE REAL judgment free zone, not just a marketing scam like Planet Fitness claims. Class times are convenient and every single person is welcoming and accepting given everyone is on different levels and body shapes. Less

Sid and Deb are the best! They are helping me become stronger and fit! They make everyone feel welcome and comfortable

Awesome atmosphere. Amazing trainers and members. Very friendly and welcoming gym.

Great gym with dynamic workouts to build strength and keep you motivated.

Sidney and his coaches are great. They are extremely motivating and work with all levels of abilities. They all take the time to talk to you, show you correct form and help you be the best you can be!... More

Sidney and his coaches are great. They are extremely motivating and work with all levels of abilities. They all take the time to talk to you, show you correct form and help you be the best you can be! Less

Great people!! Must try ask for Sidney !!!

Fantastic gym with tons of Positive energy! The Perfect workout environment for anyone who is serious about Fitness.

Best gym family ever. Super welcoming and supportive. Trainers are awesome. Push you to work hard and make every workout fun.

Underlying Strength is an incredible gym that can tailor workouts to your individual needs and goals. If you are looking for a supportive environment with reasonable pricing then this is the gym for you!... More

Underlying Strength is an incredible gym that can tailor workouts to your individual needs and goals. If you are looking for a supportive environment with reasonable pricing then this is the gym for you! Less

Best dam gym around, positive and encouraging, success!!!!!👍💪🏋️‍♀️

This is one of the best gyms I have ever been in! Everyone is so friendly and they do not judge you or make you feel uncomfortable! Both Chris and Syd are great coach’s! If you are looking some where to start fresh and change this is the place to go! I am beyond happy to go here!!!... More

This is one of the best gyms I have ever been in! Everyone is so friendly and they do not judge you or make you feel uncomfortable! Both Chris and Syd are great coach’s! If you are looking some where to start fresh and change this is the place to go! I am beyond happy to go here!!! Less

Great atmosphere. Everyone treats you like family.

Best experiences I’ve had with fitness in my adult life. It’s fun, hard and feels like family. Chris Newbert and Sidney Turner are truly wonderful.

Good morning 🙂 I just have to pay u a very well deserved compliment... I am crazy about what u are doing for these people & what u have built... this is u. Be so proud of this sid cause i am so proud of the movement. It is beautiful. I am a fitness guru i eat it up & let me tell u - your place is special. The coaching I’ve experienced by u & Chris, the thoroughness, the passion, love, to kn... More

Good morning 🙂 I just have to pay u a very well deserved compliment... I am crazy about what u are doing for these people & what u have built... this is u. Be so proud of this sid cause i am so proud of the movement. It is beautiful. I am a fitness guru i eat it up & let me tell u - your place is special. The coaching I’ve experienced by u & Chris, the thoroughness, the passion, love, to know when & how hard to push people ... i just want to say amazing. Just keep going my friend Less

I joined Underlying Strength in April 2018 with a friend for a 60-Day Challenge. I have to admit I was scared and very apprehensive as to what I had gotten myself into, but after the first 2 weeks I was hooked! The instructors Sid and Chris are amazing, and the team environment is even better! The things I thought I could never do again as a 40 year old mom of 2 I am now doing, and the changes I ... More

I joined Underlying Strength in April 2018 with a friend for a 60-Day Challenge. I have to admit I was scared and very apprehensive as to what I had gotten myself into, but after the first 2 weeks I was hooked! The instructors Sid and Chris are amazing, and the team environment is even better! The things I thought I could never do again as a 40 year old mom of 2 I am now doing, and the changes I see in not only my body, but my entire mindset are the best part! Take the risk on yourself and I promise you won’t be disappointed in the results! Less

i joined this gym about 2 months ago and i love everything about it,didn't take long to feel comfortable with everybody,they all friendly and feel like your second family,great trainers and classes, i take 2 semi training and 3 to 4 times fit camp weekly and already seeing change in my body,the only regret i have is not to join this club earlier but feel so lucky to be part of this wonderful gym,... More

i joined this gym about 2 months ago and i love everything about it,didn't take long to feel comfortable with everybody,they all friendly and feel like your second family,great trainers and classes, i take 2 semi training and 3 to 4 times fit camp weekly and already seeing change in my body,the only regret i have is not to join this club earlier but feel so lucky to be part of this wonderful gym,thank you sid and chris for the great classes. Less

Ultimately the best!!! Training classes are out of this world.

By far the best bootcamp out there. 💪🏻 I’d give 10 stars if I could. Highly recommended for people in ALL shapes and sizes.

An passionate owner!! If youre looking for a serious workout plan! Like to work in groups this place is the place to be!!

Absolutely love Sid and Chris! I have been a member for a year and couldn’t be happier with my progress!

I’ve been coming here since January, I can’t believe how much my body has leaned out since starting this program. Sid and Chris Have taught me the correct way to lift, what I should be eating. Everyone at the gym is very helpful and supportive. If you’re hesitant to try this don’t be , it’s a tough workout but you You get results. Come join us and have fun looking better and feeling better.... More

I’ve been coming here since January, I can’t believe how much my body has leaned out since starting this program. Sid and Chris Have taught me the correct way to lift, what I should be eating. Everyone at the gym is very helpful and supportive. If you’re hesitant to try this don’t be , it’s a tough workout but you You get results. Come join us and have fun looking better and feeling better. Less

Classes are amazing! Sid is very motivating and knowledgeable! Highly recommend taking boot camp classes here!

This is such a great place where anyone can crush their training goals with the help of Sid and Chris. The atmosphere is filled with tons of positivity and great energy. All members are so warm and welcoming as well, cheers!... More

This is such a great place where anyone can crush their training goals with the help of Sid and Chris. The atmosphere is filled with tons of positivity and great energy. All members are so warm and welcoming as well, cheers! Less

RESULTS! I've only been working with Sidney for about 2 months, but the results I'm seeing and feeling are amazing! I used to workout on my own at the local fitness club, but I was bored and never saw any results. It's actually fun to train with Sidney and his knowledge is so extensive – he knows exactly the best plan for me to achieve my goals. Thank you so much!... More

RESULTS! I've only been working with Sidney for about 2 months, but the results I'm seeing and feeling are amazing! I used to workout on my own at the local fitness club, but I was bored and never saw any results. It's actually fun to train with Sidney and his knowledge is so extensive – he knows exactly the best plan for me to achieve my goals. Thank you so much! Less

Every time I go to Underlying Strength, I have an amazing experience. Sid makes the workout a joy to be apart of. Whether he has someone brand new to one of his bootcamp classes or someone that's been there for a while, he's still able to make quick assessments and adjust the class according to your level. You can see how happy and committed he is to his job. I love going to his classes each and ... More

Every time I go to Underlying Strength, I have an amazing experience. Sid makes the workout a joy to be apart of. Whether he has someone brand new to one of his bootcamp classes or someone that's been there for a while, he's still able to make quick assessments and adjust the class according to your level. You can see how happy and committed he is to his job. I love going to his classes each and every time. I always bring friends, he may not know them, but he speaks to them, watches them, encourages them and in the end they have felt accomplished and very welcomed. You will love your experience every time you go! Less

Sid has great knowledge and is well versed in training and getting results. Excellent facility and is accompanied with great people and an amazing atmosphere. If your looking for results look no more!... More

Sid has great knowledge and is well versed in training and getting results. Excellent facility and is accompanied with great people and an amazing atmosphere. If your looking for results look no more! Less

Excellent motivating boot camps! Whether your a beginner or a long time exerciser he will modify to fit your level of exercise while still achieving an excellent work out! Very attentive to your individual needs! Join us and "make the walls sweat"!... More

Excellent motivating boot camps! Whether your a beginner or a long time exerciser he will modify to fit your level of exercise while still achieving an excellent work out! Very attentive to your individual needs! Join us and "make the walls sweat"! Less

Excellent attention. Sid has excellent knowledge of the body and knows how to make allowances for age and condition so that you can get a good workout without hurting yourself. Working out with Sid is the fountain of youth!... More

Excellent attention. Sid has excellent knowledge of the body and knows how to make allowances for age and condition so that you can get a good workout without hurting yourself. Working out with Sid is the fountain of youth! Less