Over two decades ago, I and eleven other fools moved an oversized, double planked oak deck uphill. By hand, no equipment but our hands and backs.
As one of the stronger people, I was with the group on the low end.
I have dead-lifted 400 lbs. This was heavier. I thought my fingers were going to come out of their sockets.
We somehow reached our destination. I found myself standing in a slight depression. I needed to get out of it to put the damn thing down. I did not think that I could, but the fear of crushed legs motivated me and I was able to do it just in time.
After this, my heart was pounding in my chest, but not quickly: it was eerily slow. Scared the hell out of me. I quit smoking that day and never smoked again.