I agree with the answer above and would like to add on to it. When looking at nutrition labels you should be looking at what ingredients was used to make the food, including the chemical compositions. For an example, some people are allergic to peanut butter, therefore it is their responsibility to check the label so that they know what company made it and the ingredients. Also remember to check the expiring date :D
The substance that provides immediate energy is adenosine triphosphate (ATP). ATP is called the energy currency of the cell, and is hydrolyzed to produce adenosine diphosphate and a phosphate group.
ATP is obtained by break down of carbohydrates, fats as well as proteins.
I'm pretty sure it is physical and mental development
