Muscle injuries and dehydration can also trigger cramps. Dehydration is the excessive loss of fluids in the body. Low levels of any of the following minerals that contribute to healthy muscle function may also cause muscle cramps: calcium.
The heart is a part of the cardiovascular system in fact its the main part so if you have heart disease another way of saying this is you have cardiovascular disease.
It keeps muscles throughout your body in constant motion, letting one set of muscles relax while the same set on the opposite side of your body contracts. Although running is a powerful cardiovascular exercise, it requires some modifications to make it a true full-body workout.