Lazy bed means that you can't get up in the morning and then lie quietly in bed for 5 ~ 10 minutes. The medical profession believes that it is the "way of health preservation" for middle-aged and elderly people, which is beneficial to health and should form a habit.

1. Lazy bed helps to regulate the physiological activities of vagus nerve excitation and sympathetic nerve inhibition during sleep; After waking up, sympathetic nerve is excited and vagus nerve is inhibited. It takes a physiological transition from sleeping to waking, and the body relies on a few minutes of lazy bed to complete this transition.

The lazy bed can help the clock run. Medical research shows that the operation of human biological clock is closely related to light. There is a difference between people exercising with their eyes open and sleeping with their eyes closed. The biological clock is regulated by light, so a few minutes of lazy bed is an ideal alternating process.

3. Lazy beds can reduce the occurrence of sudden diseases. A new survey shows that 1 am to 8: 00 am is a dangerous time of the day, and about half of the patients die at this time. Early morning is the "devil's time" for cerebrovascular diseases, and the most dangerous moment is the moment when you wake up. When people sleep, the cerebral cortex is in a state of inhibition, and various physiological functions are maintained at a "low speed" state. The metabolism of the human body is reduced, the heartbeat is slowed down, the blood pressure is lowered, and some blood is stagnant in the limbs. When you wake up in the morning, your breathing, heartbeat, blood pressure, muscle tension, etc. It will quickly return to "constant speed operation" at the moment when the brain turns from inhibition to excitement, which will lead to the excitement of sympathetic nerves and adrenal glands, which will make your heart beat faster, blood vessels contract and blood pressure rise. After overnight metabolism in the body, urine and recessive dehydration will lose water, resulting in blood thickening, slow blood flow, increased circulatory resistance and insufficient blood supply to the heart.

Therefore, getting out of bed immediately after waking up is undoubtedly worse for the already overloaded heart, which is most likely to induce cardiovascular disease and even cause accidental death. So, when you wake up in the morning, don't get dressed immediately. Instead, lie quietly in bed, take a deep breath, stretch your waist, move your limbs, get dressed later and get out of bed, so that the body function that just woke up from a dream can gradually adapt to daily activities.