Is that NORMAL??

This is a little random, but my son has been eating an INSANE amount of food lately. This morning before first service he had 4 packages of oatmeal, 1 yogurt, 2 granola bars and a blueberry muffin!! He's 5! I mean, I know kids burn a lot of calories because of their high metabolism and level of activity, but geez. Every time I talk to him he's asking for food. At least he's eating heathy, I just don't want him to get fat! When he went to the doctor a few weeks ago he was in the 90th percentile for his weight and the 75th percentile for his height. Maybe I'm crazy, but it just seems like his stomach isn't big enough for all that food!