HRV Science for Athletes
HRV Tracking for Swimming
Stop guessing when to train hard and when to recover. Use your heart rate variability data to make smarter Swimming training decisions every day.
Why HRV Matters for Swimming
Elite swimmers often over-train due to the low perceived effort of water training. HRV is the objective signal that your body is actually under load. Calio's baseline adapts to your swim season patterns.
Built for Swimming Athletes
Personalized Recovery Score
Your score is calculated from your own 60-day HRV baseline — not generic population averages.
Training Load Management
ACWR-based guidance keeps your acute-to-chronic workload in the optimal zone.
Sleep Intelligence
Track sleep debt and get bedtime recommendations that account for tomorrow's training.