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.
You can tone and strengthen several muscles in your legs as well as your abdomen and waist in a few exercises. If you are pressed for time, these multitasking movements can yield results. Talk to your doctor before beginning to exercise.