Blog
Sleep in perimenopause: why it changes before menopause
Sleep in perimenopause explained: why nights change before menopause, what recovery metrics reveal, and when symptoms deserve medical support without guessing.
Heart rate recovery after 60 seconds: The deep dive into autonomic aging
New research shows that the first 10-60 seconds after exercise reveal your autonomic age. Learn what each recovery window means, why vagal tone declines, and advanced strategies to improve HRR.
Training readiness score: How to know if your body is ready to train
Learn what a training readiness score is, how it's calculated from HRV, sleep, and recovery data, and how to use it to train smarter every day.
Heart rate recovery: The mortality predictor you're ignoring
Heart rate recovery (HRR) after exercise is one of the most powerful predictors of mortality. Discover normal values by age and how to improve it.
Body energy: How to monitor your energy reserves on iPhone and Apple Watch
Discover how SuperAge's Body Energy monitors your body's battery on iPhone and Apple Watch. Learn to interpret energy levels and optimize recovery and performance.