The sleep of the elderly has a characteristic: shallow sleep, frequent waking at night, and great influence of environment on sleep. And with the increase of age, the functions of various physiological systems of the elderly decline, leading to reduced sleep.

Most old people are not too sleepy. Old people are used to going to bed early, and as a result, they lack sleep motivation, but they can't sleep after going to bed. Due to age, the deep sleep of the elderly decreases, and the shallow sleep increases accordingly, so it is easy to be awakened by subtle sounds.

Finally, the elderly had better get more sunshine. Exercise helps to sleep.