You should do this exercise for the Achilles tendon after a break from sports. The Achilles tendon connects the heel and calf muscles.
It is the strongest tendon in the body, but it can also tear. The German Society for Orthopedics and Trauma Surgery (DGOU) draws attention to this. The experts recommend slowly increasing your sporting activity after a long break - and getting your Achilles tendon and calf muscle fit with stretching and strengthening exercises. This is how you can prevent an injury.