Heart rate is about 65, breathing 15-20 times. When normal adults are quiet, it is best to breathe for 6.4 seconds at a time. The human heart beats about 70 times a minute in a quiet state. An adult's heartbeat is about seventy or eighty beats per minute, which is normal between 60- 100. In normal times, if an adult's heartbeat exceeds 100 times per minute when he is quiet, it is medically considered as tachycardia; Less than 60 times, it is bradycardia.
Extended data:
Normal adults breathe about 12-20 times per minute. The ratio of respiration to pulse is 1: 4, that is, the pulse beats 4 times every 1 breath. Children breathe faster than adults, up to 20 ~ 30 times per minute; The newborn's breathing frequency can reach 44 times per minute. In the resting state, the breathing frequency of normal adults is 12 ~ 18 beats/min, and the ratio of breathing to pulse is 1: 4. Newborns breathe about 44 times per minute, which gradually slows down with age. The main manifestations of peripheral respiratory failure.
Baidu encyclopedia-respiratory rate