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.
1 Cardiovascular exercise, such as aerobics, running, biking, and dancing, exercises your heart and lungs, increasing the efficiency with which your body supplies oxygen to its muscles. 2  As a result, your body's endurance and stamina will gradually increase (and its fatigue levels decrease) with cardiovascular exercise.