During a checkup, a doctor asked a man about his physical activity level.
He described a typical day this way.
"Well, yesterday afternoon, I took a five hour walk about 7km through some
pretty rough terrain.
I waded along the edge of a lake. I pushed my way through brambles. I got sand in my shoes and my eyes. I avoided standing on a snake. I climbed several rocky hills.
I took a few 'leaks' behind some big trees. The mental stress of it all left me shattered. At the end of it all I drank eight beers "