I haven't exercised for months. I practiced my chest muscles last Sunday. It was sour at first, and then it was painful. It's been almost a week. Why haven't I recovered?
You exercise too much. You feel sore because you don't have enough oxygen during exercise, and your muscles don't breathe oxygen and produce lactic acid. Later, you feel sore because your body can't consume lactic acid at once, so it hurts, that is, too much lactic acid will hurt. It is recommended to apply more hot water or take more hot baths.