I've been working with the coaches at Boston Underground for almost a year now, and I feel better than I ever have before. The strength training and coaching has helped me to be a better triathlete, and helped me to feel better on a daily basis.
June 2023
This place is great! The coaches are awesome, and the strength camp classes are the perfect balance of group fitness and hands on coaching. The coaches also do an amazing job modifying exercises for all fitness levels. Highly recommend!
July 2021
I had a rough year during COVID as most people. Coming to Boston Underground Strength Training and working out with Angel and Angela really brought my mood up. I told them what my goals were and they made a routine to fit what I asked. Most of all, the facility is great and was just what I was looking for.
Boston Underground Strength Training is a strength training gym in Waltham, MA. We offer private training ( 1 on 1), semi-private training (up to 6 people) and strength camps (up to 9 people) led by experienced and certified coaches. Our goal is to help you reach your fitness goals and build a stronger & healthier you.
