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.
But strengthening your back muscles, particularly the lats (which give your back its V shape), can help improve posture. This exercise also targets several other muscles at once: the biceps, shoulders, and other back muscles (traps and rhomboids), which will help improve your overall upper body strength. Aim for 1-3 sets of 8-15 repetitions. Starting Position Grasp one dumbbell in your right hand, palm facing the body.