To rest and recharge our bodies.
Why do we need sleep?
To rest my brain, if I don't sleep, I get cranky! Grrr...
So we can feel better during the day.
We need to
sleep so that our body can restore any wear and tear, rejuvenate, to grow and work
afresh each day. Apart from these basic functions, sleep also keeps our body
fit, mind fresh and our internal system healthy