Heart rate is an accurate and stable index reflecting exercise intensity. Sports medicine experts suggest that the effective weight loss heart rate should be 60% ~ 75% of the maximum heart rate (MHR = 220-your age), and beginners can usually keep it at 60% ~ 65% of the maximum heart rate. For example, if a 40-year-old friend's maximum heart rate is 220-40 = 180, then his target heart rate in aerobic weight loss exercise should be180× (60% ~ 75%) =108 ~135, and his heart rate is too low.

The monitoring of exercise center rate can be realized by wearing an electronic heart rate chest strap, and the heart rate can also be measured by the traditional method of touching the pulse of radial artery or carotid artery. In practice, the heart rate per minute is usually obtained by measuring the pulse of 10 second multiplied by 6, thus avoiding the influence of the rapid decline of heart rate after stopping exercise.