I eat 2 hardboiled eggs and a banana in the morning before I hunt, and open two CLIF bars and wrap them inside a handkerchief. The two CLIF bars are all I need for an all day hunt, even if on the move the whole day. Sometimes I only eat one. I just don't get hungry when hunting for some reason, and this boy can really eat. Never had to take a dump in the woods either, and I almost always hunt all day. My body just "knows" what I'm doing and adjusts accordingly, except for the pee. If I am still hunting all day, I bring a quart of water and drink most of it 'cause it's easier to pee at most any time. If I am stand hunting I drink very little.