Exercise intensity should be appropriate, feel too tired or other discomfort to stop exercise; in the summer, wait until the coolest time to do exercise, avoid direct exercise in the sun; winter exercise to pay attention to cold; if you live in a very cold or hot area, find an air-conditioned indoor sports venues will be better; do not immediately after the exercise shower; after exercise to pay attention to replenish water; early morning blood pressure fluctuates easily, blood viscosity, should not exercise, to the afternoon or evening is appropriate; do not exercise immediately after meals, at least two hours or more.