You never know when it will hit you. I've been lucky. I've never broken a bone that I was aware of. The reason I say that is I broke my collar bone when I was under the age of one when I fell off a bicycle handle bar my brother had placed me on.

My mother said I cried every time she rolled me over in my crib, but she didn't think much of it until it went on for months. An x-ray showed I had broken the collar bone, but it was half healed and not worth breaking again to straighten up.
After Thanksgiving, my wife instructed me to take out all the X-Mas stuff. She has a bunch. My job is to lift all the heavy boxes (up to 80#'s) and bring them into her staging area. That's it.
Two days later, she begs me to help her put up some ornaments high in the tree that she can't reach. Being a great helpful husband, I started putting the 1 ounce ornaments up on the higher limbs. Damn if I didn't pull something in my lower back stretching out to reach those high places. I've been a mess since then. I was going fishing last weekend, but had to cancel. Hell, I couldn't even get out of bed last week. I had to roll over and get down on my knees and crawl to the pisser at night.
To make matter's worse, I was in such pain at work, I drove to Sam's and bought a bottle of 150 Advil tablets. The instructions say to take one pill every four hours. I don't believe instructions on those bottles. I think they are for people under 100 pounds. So, I took two pills every two hours. It never helped for three days, so I picked up a huge tube of that heat ointment stuff.
I was at work and nobody was looking, so I dropped my pants and squeezed at bunch on my hand to rub into my lower back. That stuff comes out fast. It's thinner than I expected. I failed to notice that I squirted a bunch out that fell into my underwear. I walked back out into view of others before my balls started on fire. I hear I turned red as a tomato before I ran to the water cooler for aid.
I'm still in pain but it's getting better. I can now sit up and walk to the pisser at night. The bottle of Advil is history and I'm on my third tube of heat ointment.