I am 5'11" and weigh 170. I take with me and eat twice what you do and feel I'm being moderate. Wow! I would feel like I was being deprived of life giving sustinance. I don't count calories but a typical day would be.

Breakfast Mountain house eggs
Pack of instant grits.
Short stack with maple surple.
Two cups of instant coffee w/ 2 packs sugar and creamer.

Snacks Gorp with M&M's & cashews
A snickers bar or 2
Dried fruit
Half a baq jerkey
Sports drink

Lunch Cheeze and Crackers with some dried sauage slices.
Water or sports drink.

Dinner Mountain house Chicken and rice
Dehydrated vegatable
Hot tea with pack of honey and fresh mint leaves (from home)
Then pretty much snack and have some bourbon.

I pack more stuff than this per day and yes, end up bringing stuff back.
But, I don't want to starve to death and I do get some extra exercise toting the extra stuff around. <img src="/forums/images/graemlins/wink.gif" alt="" />
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Enjoy your next trip...