I think it makes sense, it takes a lot of energy to eat and digest food.a lt. col. friend told me about training troops for desert duty in Texas in the summer. They boarded their flights with two jerry cans of water, toted them all the way to their racks and during maneuvers, hated that weight. The only way to shed it was to drink it and they did, gladly. They had to be forced to eat in the heat. Thats something right there, even when burning calories like a bonfire they wanted to drink and didn't want to eat unless it was under scrutiny from up top.