what makes them sleep?

Why do u eat food whenever u're hungry




BTW, what makes u hungry

The desire to see the next day and being sound.

Lemme be kind enough to answer d silly question..its nature.

Cos night was design for rest by God. Anyway op we r in a free world u may choose not to sleep @ night. Sleep during d day n how hunger go wire u

We sleep at night because during the night there's no light to work..

Its more of something in your brain. there are three glands in your brian that contribute to sleep. the first is your "internal clock" this lets you know when its night and day, it also knows when dinner time is, and usually when you wake up. if you wake up the same time every day and go to bed at the same time everyday, your body will not need an alarm clock, it will just wake up on its own. then 2nd glad is connected to your eyes. so when you see light, it will not have the thrid gland put out a hormone (i cant remember the name of the hormone at the time) but this hormone relaxes your body and..pretty much makes you sleep. so when your internal clock knows its night time, and your other gland and eyes "see" its dark, the 3rd gland will put out the hormones to make you sleep.
so theareticlly, if you were placed in a room w/ no windows or souce or natural light, (just a light switch or something) your internal clock would stay in control. you would generally sleep during the "night" and be awake during the "day" even though there is no sun in the windowless room..neat huh.