英语翻译The latest beliefs are that the main purposes of sleep a

英语翻译
The latest beliefs are that the main purposes of sleep are to enable the body to rest and replenish,allowing time for repairs to take place and for tissue to be regenerated.One supporting piece of evidence for this rest-and-repair theory is that production of the growth hormone somatotropin,which helps tissue to regenerate,peaks while we are asleep.