You can keep exercising.

Muscle ache and muscle swelling (pumping sensation) are two different things. The former shows that the human body may lack exercise at ordinary times and the body is not suitable for a while. Lactic acid produced by exercise stays in the body, which makes people feel muscle ache. The latter is the effective stimulation and hyperemia of muscles after equipment practice, and it is a sign that muscles begin to increase.

If it is sore, you can choose the amount of exercise for the next day according to the degree of soreness. Because equipment practice is more dangerous, so don't force yourself. You can rest until the pain is relieved, and then resume training. Generally, the sore pain lasts for about 10 days at most, and it doesn't hurt when the body adapts. ?

If you feel swollen, this feeling will generally not affect your performance, so you should continue to train.

For the human body, lactic acid is one of the fatigue substances, and it is the waste produced by the body in the process of maintaining body temperature and generating heat during physical exercise. Most of the energy needed for human body survival comes from sugar. Blood sends glucose to various organs for combustion as needed to generate heat. In this process, water, carbon dioxide and pyruvic acid are produced, and pyruvic acid combines with hydrogen to produce lactic acid.

If the body's energy metabolism can be carried out normally, it will not accumulate, and it will be brought to the liver by blood and further decomposed into water and carbon dioxide to generate heat, and fatigue will be eliminated.

Baidu Encyclopedia: Lactic Acid