In the lungs. The carbon dioxide/oxygen diffuses through the capillaries surrounding the alveoli (grape like structures) in the lungs
Some symptoms are obsession with body image,and or weight..also they can have bad eataing disorders as well
Cystic fibrosis - causes a mucus build up on the lungs, that coats the breathing tubes
Well it depends, if you sweat a lot then yes shower is need everyday! Now if youre basic... I suggest showering Monday-Wednesday-Friday and deodorant!