What is a tennis leg injury?
A tennis leg injury is an incomplete rupture of the inside of the calf muscle, where multiple muscles are attached. It is caused mostly because of tennis-like sports due to a sudden contraction of the calf muscles. Sports like tennis and squash are most likely causing this kind of trouble due to the short and intense moves it requires to practice.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is a tennis leg injury?
### Input: 
### Response: A tennis leg injury is an incomplete rupture of the inside of the calf muscle, where multiple muscles are attached. It is caused mostly because of tennis-like sports due to a sudden contraction of the calf muscles. Sports like tennis and squash are most likely causing this kind of trouble due to the short and intense moves it requires to practice.