I remember reading somewhere that Carbs are turned into glucose for energy, protein is used to rebuild muscles and has some energy and fat has a lot more energy than carbs and protein. I think the comparison was Carbs - 4, Protein - 4, Fat - 9. That being said how come a lot of athletes has high carb, moderately high protein and low fat if fat has more energy then carbs? I might be way of on this, so if i am please correct me.
"I'm not concerned with body building; I'm just trying to make people normal human beings" - Joseph Pilates