The best time to exercise rheumatism patients is the afternoon after the nap to before dinner, rather than early morning. The main reasons are as follows: 1, early in the morning when you get up, muscle, joint and visceral function is in a relaxed and low state, the movement is not yet able to adapt, easy to cause acute and chronic injuries. 2, early in the morning when you get up, high blood viscosity, coupled with sweating during exercise caused by water consumption, blood more viscous, easy to cause vascular embolism and sudden myocardial infarction and stroke. Many rheumatic diseases are prone to cardiovascular disease, early morning exercise is more dangerous. 3, early morning air is not fresh, early morning air carbon dioxide content is higher than the afternoon, because no sunlight at night, the photosynthesis of leaves stopped, releasing a large amount of carbon dioxide. 4, early morning air has a higher density of pathogenic microorganisms, which is not good for the human body, because there is no sunlight and ultraviolet radiation at night, which is not conducive to sterilization. In addition, you should choose a place with fewer people, quiet and more trees to exercise. Of course, most of the rheumatic diseases such as rheumatoid arthritis, ankylosing spondylitis and osteoarthritis patients are in the early morning when they wake up symptoms aggravated, and after the activity can be reduced, therefore, in the early morning for non-strenuous activities (such as joint activities and radio gymnastics, etc.) is not bad, but before the activity is recommended to drink a glass of plain water to dilute the blood to prevent the attack of cardiovascular disease.