Because my job keeps me moving nearly constantly, often lugging things around like ladders on uneven terrain, weight has never been a problem for me. I did notice I was becoming winded more easily a few years ago, though, and went back to a short, hard (steep hill, half a mile up, then back down) run 4 days a week. When I was younger I used to run just as hard and a lot longer.
Made me feel like a kid again, until a kid training for cross country passed me easily on my isolated road- well not that easily. He kept looking back and I swear I saw consternation on his countenance that it took him so long to leave me in the dust. About killed me to accomplish that.
Anyway, after a particularly hard day of busting sod with a shovel a couple of months ago my knee started aching and several doctor visits and an MRI seem to indicate a couple of meniscus tears and a spot of ligament bursitis.
Now I wonder if I will ever run again. Sigh! the travails of mortality. I may have a limp next time my Grandson sees me.
As long as I can keep carrying my ladder around for about another decade I'll be fine.