I needed salt for my water softener so I bought 8 40 pound bags at Costco. Hauling them from my car in the garage, into the house, down 16 steps to my lower level, and pouring six of them into the softener totally wore me out. Next time I think I should carry them in more than a single trip! (Just kidding) Even carried one bag at a time was a real chore for me. By the time I was done I felt like I had done a hard workout of my shoulders and breathing pretty hard. Maybe its time to take my 27 year old son up on his offer of taking care of this chore for me. Being 78 sometimes its hard to ignore the signs of aging.