For All Ages & Abilities

Discover personalized training for all ages and abilities. Our personal training programs are fun and engaging.

Elite Fitness Pass

Elevate your fitness journey with our Elite Unlimited Membership at Redefine Fitness in Mount Sinai and Stony Brook

Semi-Private Training

Our semi-private program blends the energy of small-group training with the quality of personalized coaching

Elite Membership 


For those who want the ultimate Redefine experience, our Elite Membership offers and premium perks

1:1 Training

Private, personalized coaching built for your goals

What to Look for (and Avoid) When Buying Supplements

Looking for safe, effective supplements that actually work?With thousands of products on the market, choosing the right vitamins or performance supplements can be overwhelming—and costly if you get it wrong. This guide will show you what to look for and what to avoid when buying supplements, so you can make smart, science-based decisions for your […]

Using Wearables & AI to Optimize Your Personal Training Results

In the modern fitness landscape, data is king—and nothing generates more actionable data than AI-powered wearables. By tracking physiological and performance metrics in real-time, these devices reveal strengths, highlight weaknesses, and guide smarter workouts. At Redefine Fitness in Mount Sinai and Stony Brook, we leverage the latest wearable tech and AI analytics to deliver truly […]

Which Supplements Are (Really) Worth Your Money?

The supplement industry tops $50 billion in the U.S., yet up to 75 % of products lack strong evidence for their claims . At Redefine Fitness, our nutrition coaches cut through the noise to recommend only those supplements backed by high-quality research—maximizing benefit while minimizing expense and risk. 1. Foundational Essentials A. High-Quality Protein Powder […]

5 Habits That Guarantee You’ll Stick to Your Nutrition Plan

Maintaining a healthy diet long-term is more about daily habits than willpower. Research shows that small, consistent behaviors can dramatically boost adherence and results. Adopt these five science-backed habits to turn your nutrition goals into lasting success. 1. Plan Your Meals Weekly Why it works: A cross-sectional study found that individuals who plan meals in […]

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