When you are starting to exercise or get in shape, begin with lower influence functions like walking or swimming to start with. Achilles Tendinitis: An overuse injury on the Achilles tendon, the band of tissue that connects calf muscles in the back of the lower leg to your heel bone. https://www.theorthopaedicandpainpractice.com/do-i-have-a-knee-tendon-injury/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB