Health Docs
Health Documentation
Learn how Yuelu computes health insights from your Apple Watch and iPhone data. Each module explains the signals, the methods, and how to interpret the results.
Body Age
How sleep, activity, and fitness signals combine into a stable body age estimate.
Blood Oxygen
How Yuelu presents blood oxygen trends and when to seek professional advice.
Morning Readiness
How overnight HRV, sleep, and recovery signals form a morning readiness suggestion.
Training Readiness
Exercise readiness, load balance, and training status from workout heart-rate data.
Exercise Fitness
How Yuelu turns workout heart-rate data into an exercise fitness estimate and what it means for daily life.
Training Load Curve
How Yuelu visualizes training intensity distribution over time and what the curve means for training balance.