I've worked since I was 10 years old, for real. I just turned 49 last week. I drive a trash truck with two guys working as loaders. I don't get out of the truck unless it's a recycle day and I'll get out to throw carts and rack the truck while the loaders load the hopper. Today I drove for 6 hours and was done. I had climbed out and stretched a few times and was feeling just fine. Arrived at the shop and the water and sewer supervisor was at the shop and just happened to look over as my left ankle and right knee decided to mutiny as I was climbing down the truck steps and I ate shit hard. I played it off and did a quick truck chore, climbed back up and headed to the landfill. An hour and half later I was back at the shop and he asked if I'm good. I said it hurt but I'm fine. He shook his head and said if that happened to one of his guys they'd gone home. I'm fit. I've backpacked all over the US and walk to work. Im a bit heavy but I'm fit more or less. I've broke my ankle, lower back and shoulder in the past and my knees feel years of labor work and hard playing. I just can't believe they both gave out at the same time after such an easy day.