1, generally 15 ~ 30 minutes is more suitable for taking a nap, and the nap time should not be too long;
2. If the nap time is too long, more than one and a half hours, the human body may enter a deep sleep state. After being forcibly awakened, people will feel depressed and powerless.
Don't take a nap immediately after lunch. It is recommended to take a nap after proper activities.
The benefits of lunch break are as follows: 1. Helps digestion and absorption. After eating at noon, the intestines need to digest food, and a large amount of blood is distributed to the intestines. If you take a lunch break, the blood supply distribution in the intestine will be more adequate. 2. It is conducive to restoring energy. After a morning's work and study, physical strength will decline, and after lunch break, physical function will improve and become energetic. 3. Protect the cervical and lumbar vertebrae. Standing or sitting for a long time will keep the cervical and lumbar vertebrae in a state of compression. Changing posture after lunch break will temporarily relieve the pressure and reduce the occurrence of cervical and lumbar diseases.
The sleep cycle is controlled by the brain and changes with age. At the same time, it is found that lunch break is a part of natural sleep cycle. Lunch break has gradually evolved into a way of human self-protection. At first, lunch break may be a way for people to avoid the hot noon sun, but later it gradually became a habit. Humans need sleep both day and night. There are three sleep peaks at 9: 00 am, 1 pm and 5: 00 pm, especially at 1 pm, and the peak is more obvious.
In addition to sleeping at night, people have a sleep rhythm every four hours during the day. Lunch break is the expression rhythm of normal sleep and waking biological rhythm, and it is an indispensable condition to stay awake. Many people, especially mental workers, will realize that work efficiency will be greatly improved after lunch break. In some countries and regions that have the habit of taking a lunch break, the incidence of coronary heart disease is much lower than that of countries that don't take a nap, which shows that taking a lunch break can relieve the cardiovascular system and reduce people's tension.