u003cstrongu003eAnswer:u003c/strongu003e Vigorous exercises like running or even training can be the reason for tendonitis. It causes swelling in the tendons and can be extremely painful. The risk of causing damage to the flexibility and motion of your ankle is what Achilles tendonitis is responsible for. It is one of the worst conditions of an ankle injury.u003cbr/u003eYou may want to rest and endure the pain, however, Achilles supports are best advisable by medical experts and professionals to help with a speedy recovery. They do this through stabilization, compression, and support.