Son, it's not what you think. It is red, because the blood flow is accelerated. Because you don't exercise for a long time, sweat glands on your skin gather, which leads to itching once you exercise vigorously, your pores are not very open and you can't sweat out. As long as you exercise for a long time, these will be eliminated.

In a situation like this, when someone is exercising, the soles of his feet are particularly itchy and his whole body is uncomfortable. As long as you exercise for a long time, this will be eliminated.