Originally Posted by Caoimhin
I found that reading the book Undaunted Courage by Stephen Ambrose was very revealing to me and my "outdoors man" life. This is about the Lewis and Clark Expedition. Most of the country was still the way God made it. The men would lose weight eating between 8,000 and 12,000 calories a day at times. It's hard work. Lewis documented well his supplies. It's a good read and makes you think if you had to return to nature today.
I've read it a couple of times. It was amazing that they could eat such a huge amount of meat and still not satisfy their hunger. That is a good indicator of needing a complete diet. They were not getting the complete proteins the body needs. Almost no carbs, mostly meat, what was described in the text as "poor", meaning very lean. I don't think I could have done what those fellows did, my hat is off to them.
Another good read about wilderness adventure/survival is "River of Doubt" about Teddy Roosevelt's trip down the Amazon river.