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.
An exercise program also significantly helps to improve cardiovascular health by strengthening the heart muscle. The less efficient your heart is, the more it has to beat per minute to get your blood where it needs to go. Regular cardiovascular exercise strengthens the heart muscle. A stronger heart muscle allows your heart to increase the volume of blood it pumps out with every beat.