H-Core for Athletes — Optimize Recovery and Performance
Train smarter — 24/7 recovery data on your finger
Performance doesn't just come from training — it comes from recovery. H-Core measures HRV, deep sleep, and other physiological signals to tell you exactly where your body is, helping you optimize training schedules and avoid overtraining.
The challenges you face
Training by feel — no objective data
"Tired today" or "feeling good" is subjective and unreliable. HRV is an objective measure of how well your autonomic nervous system is recovering — something feeling can't tell you.
Unknown whether sleep quality is sufficient for recovery
Sleeping enough hours doesn't mean sleeping with enough quality. Deep sleep is when muscles recover and growth hormone is released. H-Core precisely measures how much deep sleep you get each night.
Overtraining without knowing until injury strikes
Chronically low HRV is a sign your body hasn't recovered enough. If you continue heavy training during this period, injury risk increases significantly. H-Core warns you before your body speaks through injury.
How H-Core solves this
HRV — Core Recovery Metric
H-Core measures Heart Rate Variability every night while you sleep. See your HRV baseline and know whether to train hard or take an active recovery day.
Explore feature →Deep Sleep Analysis
See the breakdown of sleep stages: deep sleep, REM, light sleep. Know when last night's recovery quality wasn't sufficient for today's high-intensity session.
Explore feature →SpO₂ — Blood Oxygen During Sleep
Low SpO₂ during sleep can severely impact muscle recovery and next-day energy. H-Core monitors continuously and alerts you when it drops below safe levels.
Explore feature →Optimize Recovery with H-Core
HRV, deep sleep, SpO₂ — all in one ring. No monthly fee.