I'm absolutely not an expert in this. I personally perceived a benefit to focus, concentration, and problem solving in addition to morale/group enthusiasm.
My belief, however, (without experience) is that after a few days of no food the physical feeling of hunger will start being very distracting, and you'll start feeling lethargic. I believed that was the case even if you were well nourished before. Not because you run out of fat to burn but because your body starts minimizing usage. Is that totally wrong?
My belief, however, (without experience) is that after a few days of no food the physical feeling of hunger will start being very distracting, and you'll start feeling lethargic. I believed that was the case even if you were well nourished before. Not because you run out of fat to burn but because your body starts minimizing usage. Is that totally wrong?