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.
The heart is the core of the cardiovascular system. Your cardiovascular system consists of your heart and the blood vessels that carry blood throughout your body. Your heart is located to the left of the middle of your chest. It is a large muscle about the size of your fist. It works as a pump.