Heart rate recovery: how fast your heart settles after exercise

What Cardio Recovery shows

The card on the Heart tab is subtitled HR drop 1 minute after workouts. It shows your latest reading as a BPM drop, a level from Low through Fair, Good and Very Good to Excellent, your average over the chosen window and a sparkline of past readings. You can look back over the last one to five years.

The detail screen adds the recovery scale with each level explained, a trend chart and insight cards, including A Window Into Your Nervous System, which explains why this number says more than how fit your legs are.

Why heart rate recovery matters

When you stop exercising, your nervous system shifts from the push of the sympathetic side to the calming parasympathetic side, and your heart rate starts to fall. How quickly that happens in the first minute is called heart rate recovery. A fast drop suggests a well-conditioned heart and a nervous system that switches gears easily.

Heart rate recovery is widely used in exercise science as a marker of cardiovascular fitness, and research has linked a slow recovery with poorer long-term heart health. For most people it improves with regular aerobic training. Day to day it can also dip when you are tired, dehydrated, overheated or under-recovered, so an unusually small drop after a normal session can be a hint to take it easier.

FitRest is a wellness app, not a medical device, and it does not diagnose or treat any condition. If a heart reading worries you, talk to a doctor.

How to get reliable readings

The reading comes from the heart rate Apple Watch records just after a workout ends. The app's advice is simple: end the workout from your watch and keep it on for one minute. Taking the watch off, or ending the workout long after you stopped moving, leaves no clean recovery minute to read.

Readings are most comparable when the workouts are similar. A drop after an all-out interval session will look different from a drop after an easy walk, so the average and the long-term trend are more meaningful than any single number.