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.
The area of the body, which is commonly referred to as the core, is your midsection and it involves all your muscles in that area including the front, back and sides. The core includes the traverse abdominis (TVA), erector spinae, obliques and your lower lats. These muscles work as stabilizers for the entire body. Core training is simply doing specific exercises to develop and strengthen these stabilizer muscles. If any of these core muscles are weakened, it could result in lower back pain or a protruding waistlines.