Read the text and fill in the gaps with the correct words.

Your body isn’t made to sit around.
If joints and muscles are to be kept in good, working order they need regular ... .

If you stop ... , they'll stop working.

Your body finds it much easier to deal with threats such as ... , injury, or the occasional sugary or fatty snack if you are active.

Exercise also helps you maintain a ... attitude to problems and mental pressures.
You gain less body fat, tire less easily and feel better.
Exercise gives you greater flexibility and ... , prevents boredom and helps you sleep.
It also helps you find new friends and learn new skills.