2026-02-05T18:58:50.000Z

Great energy here. Always encouraging and inspiring everyone to be their best. Great workouts that include the perfect mix of cardio, lifting and stretching. 5 STARS ⭐️

2023-12-25T17:32:19.705Z

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!

2023-09-27T13:50:28.542Z

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

2023-06-19T23:50:12.196Z

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.

2023-05-30T03:45:16.008Z

2023-04-08T18:58:49.841Z

Awesome crew. Awesome workouts. Makes working out fun.

2023-03-08T19:36:23.407Z

2023-02-04T19:59:26.097Z

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.

2023-01-27T00:44:58.892Z

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!!

2023-01-11T17:00:43.708Z

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!!!

2023-01-11T02:20:04.592Z

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.

2023-01-10T19:18:28.575Z

Great place with great trainers!!

2023-01-07T01:28:32.000Z

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.

2022-12-03T23:48:07.292Z

2022-11-01T23:57:00.231Z

You will not find a better workout in the area.

2022-10-05T21:33:07.129Z

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.

2022-09-28T19:14:27.467Z

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!

2022-06-06T22:30:11.760Z

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

2022-05-25T18:29:30.000Z

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.

2022-05-25T18:22:30.819Z

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.