Why do we need sleep?
Bedtime, it’s time to sleep! But you’re
just on the last level of your favorite videogame. Wrong!
In fact, sleep is really important. You
may think you don’t need to rest. Wrong again! Your body keeps working at night.
If you don’t sleep, you stop your body
doing what it needs to do to keep you healthy.
But what does the body do when you’re
To start with, there are 2 important types
of sleep. The first is deep, restful sleep that helps repair the body.
For example, after physical effort like a
sports competition, deep sleep lasts longer.
When we’re asleep, the skin makes new
cells. The body gets rid of its waste; you consolidate your memory.
But you also grow. During deep sleep, your
body produces growth hormones. Children that sleep badly don’t grow as well.
There is also rapid eye movement sleep or
REM. Your eyes are closed, but they move under your eye lids.
This is when you dream a lot! Your brain
is very active; nearly as much as when you’re awake.
Even today, doctors are not sure what
dreams are for. Yet we do know that REM sleep helps creativity!
A good night’s sleep helps your body stay healthy and
It also helps us to learn better, to be in a good mood
and to be in top form. So? Still not sleepy?