How to exercise for flat feet and whether it is possible to do so need to be judged in relation to the severity of the condition. Mild flat feet can be recovered by walking on the outer edge of the foot, yoga, and using corrective insoles, while severe flat feet require surgical intervention. Mild flat feet can be improved by strengthening the foot muscles through exercise, walking on the outer edge of the foot and practicing plantar flexion. It is best to wear flat-footed orthopedic shoes or use flat-footed orthopedic insoles to correct the problem. It is also important to pay attention to the health care of the feet and not to stand or walk for a long period of time. For more severe flat feet, targeted stretching exercises can help reduce the adverse symptoms of flat feet. Yoga poses, for example, are also effective for stretching the back of the calf. However, severe flat feet may not be as effective with exercise. Surgical treatment, such as extra-articular subtalar joint padding, may be an option. Usually, you need to pay attention to daily foot rest and health care for your feet to avoid over-tiredness, which can trigger more serious consequences.