That's true but it doesn't tell the whole story. And that is the fact that most of us carry plenty of fat to help us deal with that level of activity. One pound of fat has about 3500 calores.
So what you need is to keep your blood sugar level up and slow down to allow you to breath well enough to use those fat reserves.
I plan about three of the above bars plus some Nature Valley bars for a day in the mountains. That's about 660 calores from the Off the Farm Bars and another 400 or so from the NV bars. That, with the meals I eat in camp or at home, I get by well enough. E
