Human Body is H2O

Our body made up of 60% water ...

water means H2O means body organs needs oxygen .While we do work out our body cells needs water & oxygen to expand and grow which are the building blocks of human body .

Pumping oxygen into body organs will start pump your muscles and most important this oxygen use to burn the calories used to gain or loose fat/muscles.

Once the body cells became active and grows, they need food to store into it to survive otherwise we cant grow muscles. Cardio is equally important for body organs as lifting weight to gain muscles. 

Similarly Carbohydrates ,fat ( good cholesterol) is also equally important like protein.

For increasing protein absorption in body we all need Vitamin C (Acidic foods) to produces live enzymes in Raw vegs & fruits like Papaya , Pineapple,Kiwi,musk melons,Lemon,Oranges etc