You should make a wheat dough some day especially in summers and autumn and see how much sweat goes into it from your hands.Puri that you are eating is nothing but sweat of the guy who prepared it.
Same goes for naans at naan shop.
Few days ago i saw a naan maker who was wiping off sweat from his neck and then he started applying oil on a qeemay wala naan with those same hands.
Naan has sweat of three persons in it.the guy who prepared the dough early in the morning.then the guy who makes the naan and puts it in the oven.the last guy who applies ghee on it and puts it in wrapper for you.Same goes for pizza you buy and think about the bread that is made in factories.