The actual squat is usually the gluteus maximus as well as the gluteus medius, if the pain occurs after the squat, there may be the following two reasons. 1, there may be a long time not to do the squat or gluteus maximus muscle exercise, suddenly do the deep squat, and the time is longer, the force is larger. It may lead to the accumulation of lactic acid in the gluteus maximus gluteus medius, thus appearing in the second day of exercise muscle soreness and pain, weakness and other feelings. It is also possible to get better by resting, but the rest time may be relatively long and may take about 1-2 weeks.