A nap of 20-30 minutes is best. Psychiatrist: Improves alertness and mood.

Whether students or office workers, most of us need to take a nap. Schematic diagram, the characters in the picture have nothing to do with the news.

[Health Channel/Comprehensive Report] Most people have the habit of taking a nap. Psychiatrist Tam Win Hong, M.D., said on the Facebook fan page "Tam Win Hong, M.D." that for most people, a nap can last for 20 to 30 minutes. If you feel more awake after waking up, keep this time; if you feel more drowsy, you may need to shorten it. Bonus points for mood and attention are also seen in research.

Benefits of short naps: Dr. Alan Tam said that research shows that short naps can improve alertness, mood, processing speed, and may also reduce fatigue. If you have to work, study or train in the afternoon, take a short nap.

Sleeping too long should be looked at separately: If you often need to sleep for a long time, observational studies have indeed seen an association with cardiovascular, metabolic, and mortality risks. There is a correlation between long naps and higher health risks, but it does not mean there is a causal relationship. It does not mean that napping itself causes the disease.

Timing is also important: taking a nap early in the afternoon is less likely to interfere with sleep at night. Going to bed too late may affect your sleepiness at night, eventually leading to a cycle of catching up on sleep during the day and making it harder to fall asleep at night.

If you sleep too little at night: For people who don’t get enough sleep at night, a moderate nap may be one of the remedies; but if you sleep enough at night and still often need to sleep for a long time during the day, you need to look back at the quality of your sleep at night, your routine, and your physical condition.