How many hours of sleep does a 20 year old male need every night?

Answer 1

Many people would reply by saying a minimum of eight hours of rest. But the answer doesn't depend solely on how many hours you log in bed. Night after night, you need deep uninterrupted sleep in a bed that provides adequate comfort support and space. What matters most of all is how you feel in the morning. If you wake up full of renewed energy, you've had a good night's sleep.

There is no one formula for how much sleep is enough for you. Expecting all people to need the same amount of rest would be as absurd as expecting them to eat the same amount of food every day. Each of us seems to have an innate sleep "appetite" that is as much a part of our genetic programming as hair color, height and skin tone. Normal sleep times range from five to ten hours; the average is 7 1/2. About one or two people in one hundred can get by with just five hours; another small minority needs twice that amount.

How much sleep is enough for you? To figure out your sleep needs, keep your wake-up time the same every morning and vary your bedtimes. Are you groggy after six hours of shut-eye? Does an extra hour give your more stamina? What about an extra two hours? Since too much time in bed can make some people feel sluggish, don't assume that more is always better. Listen to your body's signals and adjust your sleep schedule to suit them.

Keep in mind that sleep needs change with age. And the older you are, the less total sleep time you may need. A newborn may spend 18 hours asleep. From infancy to adulthood, sleep decreases by more than half. Throughout the middle decades of life, seven or eight hours of sleep generally are needed to provide adequate rest. For older individuals, six hours may suffice.

This pattern changes gradually throughout life. From infancy to adulthood, REM periods dwindle to less than a quarter of a night's sleep. By their thirties, men spend less time in the very deep stages of NREM sleep. Women begin to sleep less deeply in their fifties. By age 65, both sexes spend half as much time in deep sleep as they did when they were 25. The lighter sleep stages increase later in life, and REM shrinks to about a fifth of total sleep time.

Answer 2

8

Answer 3

8 to 9

Answer 4

About 8 hours

Answer 5

clinical, live subject studies have concluded that the ideal amount of sleep is about 8 hours and 15 minutes, but this varies greatly person to person. 80% of adults on the planet function best by receiving between 7 and 9 hours sleep, and for each hour taken off that range toward 0 is the equivelant of adding and maintaining a blood alcohol content (BAC) level of +0.01 on the first night.
6.5 hrs = 0.01 BAC
5.5 hrs = 0.02 BAC
4.5 hrs = 0.03 BAC
3.5 hrs = 0.04 BAC
2.5 hrs = 0.05 BAC
1.5 hrs = 0.06 BAC
0.5 hrs = 0.07 BAC
0.0 hrs = 0.08 BAC
Each subsequent night after that, the entire range moves up an additional 0.03 BAC.
So if on the first night you got no sleep, 0.08 for that day and night, if on the next night you received 2.5 hours sleep, 0.08 for that day (0.05 from the table above, plus 0.03). if on the third night you received a full 8.15 hrs, your BAC equivalent would still be 0.02 for that day and night.

The point of all this is that you don't actually NEED any sleep. The law of cause and effect is in play he as anywhere else, and so your choices regarding sleep define your reality including alertness, reflexes, responsibility, judgement, and rational thinking.

another 10% (5% on each side of the range mentioned) are unique, but still pretty normal, and so the scale and all stats would be altered to accomodate such a gift.
As for the other 10% of the population, they will most likely be advised by their doctor of health care professional not to operate heavy machinery whilst on drowsiness medication, not to drive when at high risk of fatigue due to coming down from speed, amphetamines or other stimulants, and other such warnings that general practicioners and hospital staff are required by law to advise patients of. There is an additional 0.1% of the population who suffer from long term, untreatable conditions that affect the brain, bloodflow or hydration. These people have been disallowed from high attention / concerntration roles of society. The amount of sleep these 10% need is usually more than normal by varying amounts.

Answer 6

20 years or 90 years old - everyone needs & should have at least 8 hours of good sleep every night.

Answer 7

normal human brain requires 20 mins of sleep and after that sleep cycle starts where every 90 mins of sleep you have 20 mins of dreams.as a total rest for the body,if a 20 year old sleeps 7 hours a day are more than enough

Answer 8

The average male needs at least 8 hours of sleep to replenish himself for the challenges and stresses of the next day.

Answer 9

7-8 h

Answer 10

Healthy Amount Of Sleep