+100
The secret language of your heartbeat
Discover how the tiny computer on your wrist decodes your heart's secret signals. Learn the science of heart-rate zones, photoplethysmography, and recovery metrics to train smarter, not just harder.
4 chapters72 assets
by coach · Oct 28, 2026
Earn 100 gems when you complete this project
Top 3
Be the first to earn points here