Resting heart rate is the most underrated number in fitness — mostly because people read it wrong and panic.

Look at the trend

One high morning is noise: bad sleep, late meal, a glass of wine. The trend over two weeks is the signal. Up three beats for a week straight? That's load talking.

The useful comparison

Compare today to your 30-day average, not to your best-ever morning. You'll feel better and make smarter calls.