I ate cereal before hiking 7 miles, about 2.5 of those miles going up a mountain. I brought three bottles of water with me and used them all up. When I finished, I felt exhausted. I ate a snack of wheat-cheese crackers but still felt tired and in need of calories. So, on the way home I stopped at Dairy Queen and got a small blizzard. Probably not the best, but it did give me some energy back. I don't like the saturated fat though, and I'm trying to keep my weight down (have lost 10 pounds from hiking past few months). Any ideas of an alternative quick energy food?