John is performing static stretching on his calf muscles. During the stretching, however, John feels tension in his calf muscles. Identify the action during the procedure that is most likely to have caused the muscle tension in his calf muscles.

John is performing static stretching on his calf muscles. During the stretching, however, John feels tension in his calf muscles. Identify the action during the procedure that is most likely to have caused the muscle tension in his calf muscles.



Answer: He let his heel hang off a step.