Sleep

Most people start feeling sleepy at around 11.00 p.m.

When people are tired they often open their mouth and yawn.

When they get into bed, they put their head on the pillow.

In bed, many people sleep under a duvet filled with feathers or synthetic material.

Other people prefer to sleep under sheets and blankets.

Some people can't sleep because they suffer from insomnia.

People sometimes have to take sleeping pills to help them go to sleep.

Some people who are asleep make a loud noise when they breathe, i.e. they snore.

In hot countries, it's common to have a short nap in the afternoon.

A person who sleeps well sleeps like a log.

Someone who doesn't sleep very deeply is a light sleeper.

Some children have nightmares if they watch scary films before bedtime.

If you drink coffee in the evening, it may keep you awake.

In the middle of the night, most people are fast asleep.

As many as 15% of people sleepwalk during the night, getting out of bed and even getting dressed or eating.

When people need to get up early, they often set the alarm.

If you don't hear your alarm, you might oversleep.

According to one study, 4.7% of Americans fall asleep while driving.