Prescription studio
Generate today's session
Karvonen heart-rate reserve targets from Tanaka predicted max, a six-phase structure, and a music tempo anchored to the middle of your zone. Nothing is stored until you seal it.
Step 1 · your numbers
46.0 ml/kg/min
entered manually
Don't know your VO₂max?
Uth–Sørensen non-exercise estimate · Tanaka HRmax — from age 38 and resting HR 58, estimated HRmax 181 bpm.
47.9 ml/kg/min127% of the 37.8 peer average
Sign in to seal estimator runs into your history trend.
Step 2 · device
Step 3 · today's workout
Step 4 · how you want to feel
AI-generated audioComposed by a generative model from your physiological data. Not a medical device — fitness guidance only.FTC 16 CFR §255 · EU AI Act Art. 50
Set your numbers and generate a prescription. Nothing is stored until you seal it.