First of all, I assume that you are slightly sore, so let's talk about the principle of muscle growth: normal training will cause recoverable damage to your muscles, and because you should be doing anaerobic training, lactic acid will remain in your muscles, so you will feel sour, which is normal. Muscle damage can be recovered by food and rest. When the amount is enough, you will recover a little more every time than before training, and your muscles will gradually become bigger and stronger.

What to do: You can continue training if your muscles are not sore. It may be sour for a long time at first, but with the increase of strength, it will not be sour for 2 days or even 1 day after training. Generally, bodybuilders practice 1 to 2 muscle groups at a time, and then practice another muscle group tomorrow, and cycle once a week.

Actually, I had a similar experience. When I wrote the next day, my arm muscles ached, but generally nothing happened.

Second, it may be that you haven't exercised for a long time, and this happens suddenly during exercise. Do you hear the sound of your joints when you exercise? On the one hand, you haven't exercised for a long time, on the other hand, you lack collagen, which is what women whiten. The solution is to supplement collagen and warm up before exercise.

Third, there is another possibility. I don't know the technical terms. For example, I started doing abdominal muscles and sit-ups, but at that time I seldom exercised my back, resulting in backache, because everyone knows that doing sit-ups hurts my back, especially when the movements are not standard. The solution is that you should have a fitness plan and standard movements.

I hope it helps you.