It is actually quite normal for the muscles in the front of the thigh to feel pain after a deep squat, and only if the pain is more intense will we consider that there may be a more serious injury to the muscles in the front of the thigh. It is normal for pain to occur the day after we walk or the day after we exercise our thighs, due to a mild tear in the muscle and a large accumulation of lactic acid. In this case, we can do light aerobic exercise for the lower extremities to promote muscle recovery, lactic acid dissipation and metabolism. In addition, the thighs can do microwave physiotherapy, or even take some oral blood circulation medication to promote the excretion of lactic acid through manipulation and massage, so that the symptoms of thigh muscle pain gradually subside.