Fitness from first principles

I was frustrated by conflicting, vague, and self serving fitness advice. I wanted to understand the actual science and math behind fat loss.

So I built these calculators and tools that use math to help us learn and apply the principles that actually control how to get in shape.

So we can all get abs.

More tools coming soon...

Next steps

Create your account
Sign up to track your progress and store your personalized stats. Your journey starts here.
Learn the fundamentals
Read the Everything you need to know about fat loss guide to understand the science behind getting in shape.
Get your personalized plan
Use the Abs Calculator to generate your custom fitness plan based on your goals and current stats.
Unlock all features
Upgrade to Pro for advanced analytics, progress tracking, and detailed insights to optimize your journey.