疲乏即疲劳,是机体保护自己的正常生理脱象。任何人因剧烈的运动、繁重的体力劳动或脑力消耗过多过长,都会感到精疲力尽,背酸腰痛、困倦、甚至注意力不集中等。在正常情况下,这些感觉通过睡眠和休息都会很快地消失。如果我们忽略了疲乏的警号,不加注意,久而久之,使中枢神经失调,以至引起心脏及其它器官发病——“积累成疾”。科学家研究发现,人 Tired or tired, is the body to protect themselves from the normal physiological loss. Anyone who is experiencing severe exercise, heavy physical exertion or excessive mental exertion will feel exhausted, have back pain, drowsiness, or even lack of concentration. Under normal circumstances, these feelings disappear quickly through sleep and rest. If we ignore the tired siren, pay no attention to the passage of time, so that central nervous disorders, and even lead to heart and other organs of the disease - “accumulated disease.” Scientists found that people