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Having an exercise plan is important, but you should always ask your doctor for advice before starting it. Keep in mind that over exercising and exercising in a wrong way can hurt your body. The following suggestions (建议) can help you avoid(避免) this, Warm up before exercise. This helps to prepare your body for activities. It's especially important in the morning.

Cool down after exercise. Rather than( 而不是) stop immediately, do a few light activities to avoid aches and pains later.

Exercise with your limits(极限). Build up slowly. Never try to exercise when you feel painful. If you don't listen to your body, you will/hurt yourself.

Avoid being thirsty. Water is important to keep your normal temperature during exercise and prevent( 预防) tiredness.