There are several reasons for the beating heart of the foot: a. Foot muscle strain: walking too much, frequent weight-bearing activities, going up and down stairs, hiking and climbing, will lead to strain on the muscle fibers of the foot, and muscle fiber damage will occur. When muscle damage occurs, there will be muscle spasms, so it feels like the muscles are throbbing and there is a twitching sensation. Second, plantar tendonitis: may be and wear bad shoes, such as high-heeled shoes, hard-soled leather shoes or for a long time weight-bearing activities, will lead to increased tension on the plantar tendon membrane, over time there will be a sterile inflammation of the plantar tendon membrane, which can also be manifested as pain in the heart of the foot, the heart of the foot twitch.