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.
Different exercises will affect your heart rate in different ways, and exercises that elevate your heart rate are a primary component of good cardiovascular health. The U.S. Department of Health & Human Services recommends 150 minutes of moderate aerobic activity or 75 minutes of intense aerobic activity a week.