Puncheon floor was a lot of work back when time was most of what they had. To take a hand or foot adze to level planks left a floor which was slightly like a washboard. As a kid I bet it was not fun crawling around either. No wonder those men were tough as nails when you grew up in a rough house it made you tougher. On the farm I grew up on we had several floors like that in small cabins which we were told had housed tenant farmer and before that most likely a small slave family.