The body gets energy in two forms one is sugar and the other is fat, to be burned during your work out and how the body picks and develops that choice will be base on how you breathe during your work out. If one of the main reasons you go to the gym is to burn fat and physical endurance an understanding of the process will aid you in your goals for having clarity will refines your abilities.Burning fat gives the greatest affect for endurance and emotional feeling that you just can keep moving and doing. Fat is stored energy and once you tap into the process of burning fat you just can keep moving and feeling strong.