For over four years, UnitedHealthcare has proudly partnered with Sarah and Glenn, and we are continually impressed by the exceptional work they deliver. Their expertise has transformed our wellness offerings, garnering consistently positive feedback from our audience. From nutrition and cooking classes to sophrology and kettlebell training, their diverse sessions add significant value to our programs. Beyond their professional excellence, their outstanding communication and friendly demeanor make them an absolute pleasure to work with. We wholeheartedly recommend this incredible team.

I have been working out with Glen for over a year and he is an excellent trainer and motivator. I was unsure at my age (75) if I could work out with kettelbells but Glen has me lifting increasingly heavier bells. I am much stronger and and my balance has improved. I am very grateful to Glen for encouraging me to maintain a healthy and fit lifestlye

I can not give a more whole-heartedly positive and enthusiastic review for this paragon of an approachable fitness professional. Glenn is a fantastic trainer who knows how to approach both experienced and novice clients alike! He actively listens to you and ensures you get the most out of every training session. As a pretty fit guy in his late forties, who thought he knew a thing or two about training, I have been consistently amazed how much I have improved under Glenn's tutelage. He has truly helped me break my kettlebell fitness plateau, and is helping me transform me from a kettlebell enthusiast into a kettlebell athlete. If it were not for Glenn's most thoughtful and effective instruction, I would have never been able to handle two 24kg kettlebells after less than three months of training (I am 5.9 and 155Lbs) In short, Glenn is a great coach and I am truly hoping his business and approach to training gets the recognition it deserves! Glenn you rock!!!

I've done tons of different workouts but immediately I knew that kettlebell personal training with Glenn was the best decision I've ever made. The workout is fun, yet intense, and after every session, I feel strong and accomplished. Glenn is knowledgeable and motivating and even though it is a distance session, there is no room to slack off and I feel like he is right there with me. I highly recommend F3 to anyone looking for a great workout that won't bore you and one where you leave feeling like you can conquer anything!

Glenn gave me, a complete novice, a great introduction to kettlebells. He provided clear instructions with careful attention to form and offered a variety of routines. He followed up after the lesson with an email summary of important points. I recommend him enthusiastically.

After "training" on my own throughout most of the pandemic, I hit a wall and was worried about injuring myself as I tried to incorporate more advanced kettlebell movements into my routine. With Glen's expert instruction, I've taken my workout to the next level and increased my strength and endurance. Plus I am far more confident with the bells + now clubs. Give him a try, you won't regret it.

I have tried a lot of different workout routines in the past and have had several trainers. I never liked to exercise but knew it to be a necessary evil. With Glenn, I look forward to our training time and don't mind the "homework" between sessions. I also have realized weightloss, better endurance, and size reduction in less than a month. This is the fastest I remember seeing these kinds of results. The accountability is tops. I highly recommend F3 for your fitness needs.

Not only is Glenn an awesome trainer, but he's also a talented mixologist! I signed up for one of the virtual mixology classes and everything came to me pre-paxkaged in a cute little gift bag. I learned to make awesome cocktails and had so much fun! Highly recommend!!

The F3 Team is awesome! Their professionalism and expertise are 5 star! I highly recommend checking them out, you won't regret it!

Living across the country and having private yoga session could not be easier!!! Glenn and his staff are helping me from my home get healthier. This was a flawless interactive session. Looking forward to my next.

I had my first visit yesterday, and it was a great experience. The workout was customized to my specific needs. The facilities are very nice and I had a great stretch. I’ve taken kettlebell classes a few times over the past 8 years. It’s been 2 years since I’ve had a class due to the distance and scheduling. I was so excited to find something close to home that can fit into my schedule. Glenn was great in helping me get back to the basic fundamentals of kettlebells. I’m really looking forward to the personal training and get on track again. I’ve found kettlebell training, condition to be one of the best overall workouts I’ve ever done. Thanks Glenn!

Glenn Seth provides a superb and comprehensive service: custom personal training sessions and a broad and growing spectrum of wellness services. He tailors his programming to the particular needs of each client, and does so with contagious enthusiasm and flair. His company is worth the price of admission.

I am a super fan of Glenn, Sarah, Danny, Nikky, Emily, Hannah, Alejandra, Regina, and all of the folks at F3. I have been a client for a couple of years now, and have participated in just about every service offered including kettlebell training, yoga, massage, and nutrition services. Glenn and his team are all unbelievable talented at what they do, professional, and they personify what it means to be focused on the health and wellness of their clients. F3 is a large part of my life and I am so grateful. I give them my highest recommendation!

Glenn has been nothing short of fantastic in working with me over the past few months. I’ve noticed changes in my body that have sustained and my strength has been picking up a lot. He works with my at my own pace. He takes into consideration the fact that I haven’t lifted a lot before but was a competitive athlete growing up and have old muscle to tap into and wake up again. Overall, highly recommend Glenn for training.

Glenn and his staff are solid professionals and the best in the DC area. I travel often to DC and Glenn always accommodates my schedule. His workouts leave you invigorated and the body work is the best I’ve encountered. He has become a trusted friend over the years! F3 truly connects all levels of wellness!

Always quick and easy to book a class or session. Training is professional and thorough. Very easy to become a repeat customer.

Great experience with their event! Thank you!

Incredible responsiveness! High quality services. Massage was heavenly. Personal Chef prepared a spectacular dinner for us. My husband is still raving about it!

interesting and challenging exercises with helpful and encouraging feedback

I've been training with Glenn for two months now, and it has been really great. He's taught me a tremendous amount and really helped me to get stronger and into generally better shape. He's really great to work with, and has a good understanding of where my limits are and how to avoid injury. He's also just a super nice guy. I've been extremely satisfied and can't recommend him highly enough.

Glenn has magic hands!! I’ve had dozens of massages in my lifetime and this man really knows what he’s doing! Thank you deeply for your work!

This is possibly one of the best massages I've ever had in DC. Glen is a very talented and pleasant therapist, and I felt relaxed and balanced after 90 minutes of bodywork.

Glen, the owner, is a highly skilled instructor. He is incredibly generous and steers his clients toward their goals with efficiency and personalization. I would recommend F3 to anyone looking for truly effective methods for weight loss and strength gain.

I've been using Glenn for the past year and a half for massage, and he is excellent, really knows how to zero in on the trigger points and knead them out. Would highly recommend!

Glenn and the team are awesome. They have put me on the right path to meet my fitness goals allowing me to feel better and become stronger. If you are ready to make fitness a lifestyle get with F3 Training asap. You won't regret it!

Glenn Seth has been my personal trainer for kettlebells for almost 8 years, since I was in my early 60s.. He is well-versed in the proper techniques for using the equipment and very attentive during training sessions.When I started I was relatively unfit, with little upper body strength, and was plagued by lower back pain. Glenn has helped me become much stronger and more flexible. I am in better overall physical health and have greater stamina. He is an execellent coach in every way--knowledgeable, encouraging, patient and enthusiastic.