I picked bulbs as a teen one summer.
If I had to, I’d pick bulbs for food money. I’m 44 now and I’d definitely survive the first day.
But my second day wouldn’t start until four days later, when I could move again.
Was just discussing this with another friend. He’s in great shape but, he’s over 50 and he feels like he could probably do the job for a few days before being put in bed, with ibuprofen and an ice pack, when his back pointed out “You ain’t 20 anymore, dummy”.