Have your feet hurt while exercising?Our feet may seem insignificant, but their structure is actually very sophisticated: there are 26 bones, 33 joints, and more than 120 muscles, ligaments and nerves. Whether it's running or pulling iron, our feet have to carry our weight on our backs every day. In high-impact sports, our feet may bear 20 times the weight of our body weight.It is inevitable to have problems with such precise body parts after years of use, so the feet are also a high-incidence area for injuries, such as plantar fasciitis, Achilles tendonitis, hyperextension of the big toe...Pain in the foot not only restricts all your life activities, but also often affects the whole body, and then knee pain, butt pain, and back pain may come to you.Most people will stretch the thigh muscles, calf muscles, and buttocks muscles, but they often ignore the feet. Whether you want to relieve foot pain after running or strengthen your feet, you should learn to stretch and relax your feet.