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.
Cardiovascular (cardio) exercise has many benefits for the body. Cardiovascular exercise, also known as aerobic exercise, is movement that increases the heart and respiratory rate, and increases the blood and oxygen flow throughout the body.