vo2-max

Kai: an AI endurance coach that reads your TrainingPeaks, Garmin and Strava data. Runs on any agent runtime that reads AGENTS.md and SKILL.md.

Nine health calculators (caffeine half-life, heart-rate zones, US Navy and BMI-derived body fat, VO2max by heart-rate ratio, acute:chronic workload, waist-to-height, resting energy expenditure, heart rate recovery) whose constants are traceable to primary sources. The same compute() runs in the browser and at build time. https://healthtools.icu