You mean all those primary school children forced to lug huge bags on their backs to and from school. Their parents must be idiots. Worse still with high school kids. I feel sorry for them all bending over with these ridiculous loads of books forcing them to crouch when walking instead of walking upright.
Not a funny as it sounds. My daughter just started at "big" school. The expletives that came out of my mouth when
I tried to pick up her backpack impressed all in earshot. I said "get a wheely bag!" to which the missus said "won't work because there's too many stairs all over the campus".
For you morons that think "fitness" equals strength, you're twits. Slipping in your socks on a staircase at home is one thing; busting your back swinging a navbag into a small hole in the cockpit is another.