The phrase "calf muscles" refers to the muscles located in the back part of your lower legs, just below your knees. These muscles are responsible for helping you walk, run, and jump. Full definition
They are also perfect for getting rid of calf muscle cramps and ankle swelling. (compressioncarl.com)
For those with tight calf muscles, this will not be possible unless practiced every day. (fitbodyhq.com)
In contrast, the rear foot elevated split squat appears to produce greater calf muscle activity than the back squat. (strengthandconditioningresearch.com)