The purpose of one's Achilles tendon is to assist in bending your foot downwards in the ankle, as you do when you're pointing your toes. (This motion is called plantar flexion.) Relaxation. Getting a split through the activities that aggravate the pain will likely be the first step in remedy. https://specialistsphere.com/foot-and-ankle-pain-explained-common-conditions-diagnosis-and-effective-treatments/