In the category of stupid and regretful, I have picked up engine blocks weighing more than 300 pounds (unassisted) and put them in the bed of a truck. I have messed up shoulders, back, hips, knees and feet, needless to say. I had little patience and an obviously deleterious streak of independence. You younger people out there, don't indulge in these activities. They make for a painful life with limited range of motion in your old age.
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.