Because of this epidemic, people realize the importance of enhancing immunity and that strengthening physical exercise every day is the basis of having a good figure. Therefore, people pay more attention to physical exercise, and many COVID-19 patients hope to exercise in time after rehabilitation to improve their immunity. However, after rehabilitation, COVID-19 patients should make a comprehensive evaluation according to their physical condition, psychological condition, cardiopulmonary function and so on, and then decide the exercise mode. First of all, for critically ill patients, it is necessary to evaluate their physical function first. If they still have basic diseases, they should consult a doctor and work out a suitable exercise mode under the advice of the doctor. They can do some aerobic exercise. However, such people are prone to fatigue, and aerobic exercise can be carried out in stages. Secondly, for patients with mild illness, this kind of human body is of good quality, and the virus will not cause great harm to the body. You can do brisk walking, running and other sports after rehabilitation, but you should also carry out scientific exercise step by step. In short, when COVID-19 patients exercise after rehabilitation, the amount of exercise should be appropriate, and it is best not to have obvious fatigue, so do not do strenuous exercise for the time being. So how long can new pneumonia patients donate blood after recovery? The Notice on Printing and Distributing the Guidelines for Prevention and Control of COVID-19 Infection in a Bloody War published on the website of China Health and Health Commission clearly points out that COVID-19 patients can donate blood after seven days of recovery. According to the situation in China and international practice, after being infected with COVID-19, you can donate blood seven days after the last antigen test or nucleic acid test is positive. For critically ill patients, you can donate blood after half a year of recovery. But everyone's physique is different, and the specific situation is different. If you are willing to donate plasma, it is best to make a decision after the doctor evaluates it according to your own situation. However, experts also said that under normal circumstances, blood donation will not have adverse effects on the body.