You should puke if you were dumb enough to eat 4 power bars at once!

I have been in the bike industry for 20 years & raced both off & on road.
These supplements are needed for these types of activities, if you are walking all day it's no different. You need to "carbo" load for 72 hours prior to your activity. Pasta, rice, breads, pancakes,and othernormal foods.

During your hunt a home made lunch is OK, butCliff Bars, Cliff shot plus Gator-aide are in my Camel-back. There are several brands but try a Cliff Bar sometime,Chocolate Brownie. Everyones body is different & some work/some don't...
They are not just sugar & crap, check out any pro cyclist's diet. You don't need 10,000 calories per day but 5000 won't get you fat if you are active all day. Think about it during the turkey season get up by 3 am & trying to sleep some nights knowing you got one roosted!