How much do extroverts sleep a day around the age of 30 (

People's best sleep time has a certain regularity, about every two hours for a beat. The first beat has the deepest sleep, the second beat is slightly shallow, and the third and fourth beats are shallow. Therefore, the time of deep sleep is between 8~ 12 in the evening, and the sleep amount of these two beats for four hours accounts for 75% of the total sleep amount. Therefore, if you want to use the shortest sleep to relieve fatigue and maintain vigorous energy in a limited time, it is best to arrange the sleep time from 9 pm to 2 am. Sleep amount: The average human body needs 7-9 hours of sleep. Generally, young adults sleep 7-9 hours every night.