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.
Remarkably, a large body of new research has revealed that aerobic exercise not only builds muscle, it builds brain tissue. Aerobic exercise stimulates the birth of new neurons in specific parts of the brain where neurons can still divide in adults, including the hippocampus, which is involved in learning.