Not too long.
Don't take a nap for too long, it's best to control it within one hour. This is because after 80~ 100 minutes of sleep in the same city, the human body changes from shallow sleep to deep sleep. If you suddenly wake up in the middle of a deep sleep, it will cause insufficient blood supply to the brain and temporary confusion of the autonomic nervous system, which will make people very uncomfortable and the noon time will not be long. So everyone must pay attention.
Sleep posture should be particular.
In sleep, our body muscles relax, our heart rate becomes slow, our blood vessels dilate, our blood pressure drops, and the blood flowing into our brain is much less than usual, especially after lunch. If we sit and sleep during this period, our brains will be deprived of oxygen, and our limbs will be top-heavy and weak. If you want to relieve this feeling, you should take the right position.
It is not advisable to sleep immediately after a meal.
After lunch, the stomach is full of undigested food, or sleeping will make us feel full. No matter what sleeping position you take, it is unhealthy for your health. So we can exercise for more than ten minutes after meals, rub our stomachs, and then take a nap to improve my sleep quality.
Light activity after waking up
Don't go to work immediately after waking up from a nap. We should get up slowly and drink a glass of water to replenish blood volume and dilute blood. Don't try to do complicated and dangerous things, because our bodies are not fully awake and are prone to accidents.
Do a good job of keeping warm
Be sure to keep warm during the lunch break, especially those white-collar workers. When you are awake in an air-conditioned room, you may not feel how cool the temperature in the room is. Once you fall asleep, your body's blood circulation will slow down, and your metabolic function will also slow down, which will make you catch a cold inadvertently before going to bed. I hope you can pay attention to some health details around you.