Sort of on the same topic of work; I have an Uncle that use to farm grapes for wine in South America. A VERY hard worker and disciplined man. When I was a kid and he'd visit us, he'd always feel the callouses on my hands lol. And I had them from mowing lawns, shoveling, and other hard work to earn money starting at about 12 years old. Now I know why he would feel my hands!