Sleep

Why do we sleep

1. our bodies need time to repair themselves after a hard day of work and play.

2. Our mind needs rests and relax .

3. Sleep is growing time .

Too much TV or computer games can affect sleep, so can worry. Exercise during the day can help us to sleep.

lack of sleep

1. tiredness and yawning.

2. Bad temper .

3. Trouble with school .

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