Body.build: Optimize Your Weight Training

With the world's most advanced, evidence-based programming tool.

Created for free by a top Menno Henselmans course graduate — no strings attached.

Launch the App (desktop only)

Explore the best exercise techniques

  • Extensive catalog of exercises with technique tweaks and cues
  • Links to relevant scientific studies and expert social media content
  • Ratings and quotes from respected coaches and creators
Exercise technique and modifier options interface

Scientifically Optimized Programming

  • Use fractional volume counting for precise volume balancing
  • Detect antagonist supersets and non-overlapping-musculature sets for improved time efficiency and gains
  • Visual guidance for muscle targeting and time-efficient training
Program builder interface showing exercise selection and visual fractional volume counting

Complete Muscle Coverage

  • Ensure all major muscles are trained with appropriate tension and ranges
  • Target all muscle lengths and movement patterns
Advanced muscle coverage analysis interface

Personalized Weekly Volume

  • Based on your body & lifestyle, nutrition and training stats and goals
  • Per-muscle-group recommendations based on latest evidence
Weekly volume targets and recommendations interface

100% Free. No strings attached

  • No payment, no ads, no sign-up
  • No personal data collection, no credit card details

I took the Menno Henselmans Personal Training Course — the most in-depth science-based personal trainer course in the world — and graduated Magna cum laude in 2025. Now I just want to make an awesome service that anyone can freely use. Like Wikipedia, but for lifting.

Dieter & Menno

How It Works

  • Programmer Tab: Build your training plan visually, get instant feedback
  • Setup Tab: Input personal info to calculate optimal calorie intake & volume
  • Check out the documentation for more information