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Everyone knows that exercise is important. It makes your heart and body strong. But you need to know the following.
*Get your body ready!
Before you do any exercise, be sure to warm up for at least five minutes. During warming up, you should stretch(伸展) all parts of your body.
*Exercise enough, but not too much.
It's good to exercise twice each week. Thirty minutes each time is enough. Try all kinds of things until you find one, two or even three sports that are right for you.
*Exercise at fitness centres.
There is a lot of equipment(设备) at fitness centres. The equipment will help exercise your arms, legs and other parts of your body to make you fit. Some people buy equipment. But it is very expensive.
*Stop playing when you are hurt!
If you get hurt when you are doing exercise, don't play again until you are well.
*Don't get thirsty!
Drink a lot of water when you are playing sports because it is easy to become thirsty.
