Your heart is very important. the reason your heart is important because the heart keeps blood that's full of oxygen circulating through your body. the heart is also needed for survival, without one you would be alive today. The heart also sends blood around the body. The blood provides the oxygen and nutrients which is needed.
Nail biting happens Because people have anxiety. The nail biting relieves stress, tension, and or boredom.
Hope this helps
~QueenSupreme aka Black-Rose♥
