Avoidance begins with good schooling practices. If you are setting up a new training regimen, boost depth slowly. Likely from zero to sprinting can overload the tendon before it’s All set. There is often pain inside the Achilles tendon insertion into the calcaneus (heel bone) posteriorly (at the rear of). https://www.theorthopaedicandpainpractice.com/why-does-the-back-of-my-heel-hurt/