Ok I may be wrong on this but 3500 cal is for FAT! Fat has 9 cals in a gram, 28 grams in a once 16 onces in a pound. Now we take Carbs or Protein which have 4 cals to the gram. Which would be around 1800 Cals per pound. Muscle is mostly made of protein right. So why are we using 3500 cals per pound? Just something that I would like someone to explain to me.