First, the more sleep, the better.
Many people think that the longer the nap, the better. Actually, this statement is wrong. I did an experiment. I took a nap for about 2 hours on the first day, and I was full of energy after getting up. I woke up naturally after a nap the next day, but I felt particularly tired when I slept. Of course, all this is based on my normal rest last night. Because excessive sleep can put our brain in a lethargic state, sleeping too much can easily lead to headache or fatigue.
Second, if you can't sleep well the night before, you can sleep for a while after a nap.
It is standard for ordinary people to sleep for 8 hours every day. But now many young people like to stay up late to catch a play or play mobile phones, so they didn't sleep for 8 hours last night. At this time, we need to take a nap to help us catch up on sleep. If we stay up until 2 or 3 o'clock, then the next day's nap can be extended appropriately, so as to ensure that our sleep time is up to standard.
Third, the general nap time should be controlled within 2 hours.
In many schools and units, the lunch break of staff includes three hours of meal time. Usually, the sleep time we choose is 1 to two hours, which is also an internationally recognized nap time. Two hours is neither too long nor too short, which allows us to have a deep rest without feeling tired.