How does ATP provide energy to your body?

ATP contains chemical potential energy that will snuggle up to a metabolic reaction in your cells---like the contraction of muscles or sending electrical messages along your nerve cells---- and release the energy of the bonds that hold the third phosphate molecule to the the rest of the ATP(called ADP)
ATP is able to move aroun d in the cytoplasm and deliver the energy to whereever it's needed...likewise it has to pick up this energy from the breakdown of the energy laden nutrients in your food---like glucose, starches, and fats. these large nutrient molcules are unable to move around and interact with energy requiring metabolic processes and transfer their energy---thye need the energy intermediate molecule, the ATP.