Why bring it? Trail food really helps when you're hot, tired and are not in the best mood ever.

What kind of food should I get? GORP (Good Old Raisins and Peanuts) is a very good choice for trail food. I also bring some wheat thins and some hard candy. On trips in the sierras, I use my trail food as my lunch because it actually saves weight and is backpacking's version of fast food. My favorite things to put into GORP are - Peanuts, M & M's, jellybeans, and Granola. Normally the sweet things in my GORP out number the healthy stuff by about 2 to 1. There is actually a reason for that. The sweet things taste better and the sugar in them gives you an energy boost.