It is recommended to exert your arm after 3-7 days after vaccination. Because a series of adverse reactions may occur after the vaccination, such as local skin redness, swelling, pain, or arm weakness, etc., exertion at this time may aggravate the adverse reactions. For those who do not have adverse reactions, immediate force on the arm may also affect the vaccination effect. First of all, after vaccination, a small number of people may experience redness, swelling, heat and pain at the vaccination site on the arm, or may have systemic adverse reactions such as dizziness, nausea, vomiting and weakness. If you exert force on your arm at this time, it may cause the degree of adverse reaction to worsen or prolong the duration of adverse reaction. At this time, you should pay attention to rest, do not use the vaccinated arm for forceful activities, etc., and maintain a light diet, so that the discomfort can be gradually relieved. Secondly, the vaccine needs to produce an immune response when it enters the body, and heavy physical labor and strenuous exercise may affect this process, thus indirectly affecting the vaccination effect. Therefore, it is recommended that the above-mentioned activities should not be performed immediately after vaccination, and it is not recommended to exert the arm immediately. In addition, for some special vaccines, such as rabies vaccine, which needs to be given in 5 injections within 30 days, it is also recommended not to exert excessive force on the arms during the 5 injection period in consideration of the vaccination effect. At the same time, after the vaccination, be careful not to take a shower on the same day and avoid touching the vaccination site with water to avoid infection. Avoid spicy, fried, barbecued, alcoholic and other stimulating foods; avoid staying up late and get enough sleep.