I'm in the process of installing a metal roof on my shop.
I'd be on the edge of the roof and my leg would cramp so bad, I'd have to roll over to get out of it. After the first day of non stop bending over, my legs was so sore that I couldnt close the recliner with my legs, so I just stayed there the rest of the night.

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I also limp into work on Mondays. It's hurts, but I can still do it.
This last weekend was the second one on the roof, it's wasn't bad, so I can still do it on a regular basis.the real killer was last month when we stripped the shigles. I could hardly walk!
It is great during the staff meeting on Monday mornings, " what did you do this weekend ." " oh, I layed out by the pool,I washed and waxed the car..............
". Pussys