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"This place is a gem! Classes are small, so the instructor will give you lots of personalized attention. It's really transformed my form, and I sweat a lot more as a result!! So happy that I found it."
-Lee C.

Slide backgroundHeather Gunn

"The stars are no exaggeration. Grassroots Fitness Project is the way to go if you want to get completely fit, and approach your fitness goals in a holistic, healthy way. This is more than a gym -- it is a family of likeminded people who care about living life well. Our entire family has been training at GRFP for years. Our kids love the challenge of rock climbing and yoga. The personalized attention can be found nowhere else. The trainers are extremely knowledgeable and experienced and caring. They are superb role models and excellent teachers. We are diehard GRFP fans!"
-Helen G

Slide backgroundHeather Gunn

"Our daughter started taking private bouldering classes two years ago with Wil, Heather and Chelsea. With their expertise and genuine passion for their work, our daughter has developed strong climbing skills and a fitness level far beyond where she was. We've also never seen her so excited about a sport, and I fully attribute that to the enthusiasm of the GrassRoots team. I feel like we are so lucky to have found an incredibly special place. And who would guess you could practice competitive bouldering in a residential building on west 80th Street?!"
-Emily M.

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"Grassroots Fitness has literally transformed our lives - no exaggeration!!! The team is extremely knowledgeable and supports each individual in achieving their own individual goals appropriate for their level. They have built a supportive, safe environment that encourages healthy living and exploring beyond your comfort zone. They also organize special activities - rock climbing in New Paltz, flying trapeze in Manhattan, guest lecturers on healthy eating, etc. My son started going 7 years ago (at 12 years old), the rest of us followed suit and now the whole family (husband, son, daughter, and me) regularly attends classes. We are each physically and emotionally stronger and healthier because of them! I feel so fortunate to have found such a motivating, inspiring team. I highly recommend them! "
-Judith R.

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"I love this place. Small classes, great attention to form, and it is an awesome community (both instructors and clients). Classes are small enough that instructors make modifications based on your level - I always leave challenged and motivated. I have been coming here through Classpass and it has quickly become my favorite workout in the city. Will definitely go outside of Classpass."
-A.B

Slide backgroundHeather Gunn

"I quit the gym and train with GRFP exclusively. Class size is small (4-6) which means individual attention - the trainers set the tone with their ever expanding fitness knowledge and by personally seeking to be fit from the inside out. It is a supportive environment and mindful of all fitness levels. They use the local parks for outdoor workouts and organize group rock climbing trips too. I highly recommend giving GRFP a try - they teach fitness but the lessons learned are not just physical. They care about their clients!"
-Wendy S.

Our Top Programs

30 minute express classes

If you are looking to get in and out, this class is for you. This class is high in intensity, and pulls from many High Intensity Interval Training formats.

One on One Training

This is a private session that is created specifically for the individual's needs and wants. The program is created after a thorough metabolic and medical assessment.

Small Group Training

Classic GRFP conditioning class
Whole body movements using dumbbells, kettlebells, medicine balls, jump ropes, and running.

More about GrassRoots Fitness Project

Training at Grassroots Fitness Project is about guidance not garantees. We attempt to act as a conduit of current athletic programming and fitness information. Our clients will be asked to push themselves physically and emotionally in a supportive environment where failure does not exist and goals become inevitable.

Working Hours

  • Monday - Friday6:00am - 8:30pm
  • Saturday8:00am - 5:00pm
  • Sunday10:00am - 2:00pm