What makes you sleep?

My friend freesia wants 2 no......

What makes you sleep?
Math class


Starwars movies


lectures





Oh, sorry.


Uhm, your brainwaves, isn't it?
Reply:Sleep is a natural state of bodily rest observed throughout the animal kingdom. It is common to all mammals and birds, and is also seen in many reptiles, amphibians and fish.





In humans, other mammals, and a substantial majority of other animals which have been studied — such as fish, birds, ants, and fruit-flies — regular sleep is essential for survival. However its purposes are only partly clear and are the subject of intense research





Drowsiness


Tryptophan


The amino acid tryptophan is a building block of the protein found in foods. It contributes to sleepiness. Carbohydrates make tryptophan more available to the brain, which is why carbohydrate-heavy meals containing tryptophan tend to cause drowsiness.





Melatonin


Melatonin is a naturally occurring hormone that regulates sleepiness. It is made in the brain where tryptophan is converted into serotonin and then into melatonin, which is released at night by the pineal gland to induce and maintain sleep. Melatonin supplementation may be used as a sleep aid.


The "Post-Lunch Dip"


Many people have a temporary drop in alertness in early afternoon, commonly known as the post-lunch dip. While a large meal, rich in carbohydrates, can make a person feel sleepy, the post-lunch dip is mostly an effect of the biological clock. People naturally feel most sleepy at two different times of the day: about 2:00 AM and 2:00 PM.





Alcohol


Alcoholic beverages aid relaxation and commonly are used as a sleep aid. Alcohol tends, however, to disrupt sleep throughout the night and can prevent the deeper stages of sleep from occurring





also the fact that mammals are warm blooded our bodies must conserve energy and we do this by sleeping,


little energy + sleep = less energy used meaning more energy.
Reply:Mayabe a better questin is what makes you not sleep - - - answers are - - to sleep - - - - - being able to "RELAX" and feel peacefull





Usually not being able to sleep - - would mean you have all these thoughts running around in your mind - - what am I doing tomorrow, where am I going, what time do I have to be here, what's going to happen when I get there - - with 5,463 thoughts going through your mind, lets hope you don't have to be sharp the next morning - because you will be tired then!
Reply:Certain enzymes that help make your body work need time away from normal everyday actions to work to help make a person healthy and helps a person immune system during the night time when you don't use so many other actions
Reply:School, rainy/cloudy days
Reply:Math's Class !
Reply:when you're whole body is tired, and just wants to rest.