The best time to exercise is 19:30 to 21:00 at night, this time to engage in sports have the following benefits: 1, according to epidemiological statistical analysis, this time is the incidence of human cardiovascular and cerebrovascular disease is low, that is, aerobic exercise at this time will not cause excessive burden on the heart and cerebrovascular. Especially for patients who have had cardiovascular diseases, exercise at this time is good for cardiovascular health. 2, exercise at this time can significantly increase the basal metabolic rate of the human body, 19:30 to 21:00 at night is the time when the basal metabolic rate is relatively low, seize this time for exercise is effective for weight loss. 3, after 45 minutes of aerobic exercise at this time, and then 2-3 hours of adjustment and rest. 3, this time for about 45 minutes of aerobic exercise, and then 2-3 hours of adjustment and rest, to promote sleep has a very good help.