The best gym in Islip, NY

Strong Bodies Start with Strong Beginnings.

We’re currently waitlisted — and proud of it. Want in when doors reopen?

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Please note: Those who reserve their spot now by purchasing a Foundation option will receive priority onboarding access.

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  • 01
    Intro
    Get started by booking your free intro.
  • 02
    Plan
    Talk with a coach and make a plan.
  • 03
    Results
    Start training, follow your program and get results.

Getting started is easy at the best gym in Islip, NY

At GRITT in Islip, NY, we believe that the path to reaching your goals starts with an actionable plan. Talk with one of our expert coaches to learn more about which program style will fit your lifestyle. Join our gym to get results that last.

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Group training

Stay motivated and get results with group training classes that change everyday.

Nutrition

Fast results start in the kitchen. Make a plan with a nutrition coach, regardless of your current lifestyle.

Personal training

Personal training is the most effective way to transform your body in the least amount of time.
WHENDY’S STORY
Sarai really cares about how you feel mentally and physically, her way of coaching it's juts out of these world. My body feels and looks better.
KRISSY’S STORY
Gritt has been life changing for me! My new baby is almost 5 months old and I am in such a better mood than when I had my first baby, credit Gritt!
MARIANA’S STORY
GRITT is such an amazing place. Coach Sarai is so down to earth, she cares for each and every one of her members.

Achieve your goals with us

Take the first step in becoming your own success story.

Join the Waitlist (Free)

Stay healthy outside of the gym

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