I bought a large item a few days ago at Home Depot. It came in a box that would have been difficult for one person to lift into the back of a pickup truck and it probably weighed about 80 pounds. I had it on one of those orange flat carts and while paying for it, the cashier said that she'd call someone to help me load it into my truck. I rolled the cart outside and waited for about a minute or so before my "helpers" arrived. One was a woman who appeared to be in her 60's and the other one was also a woman. She was probably in her 20's but she was wearing a leg brace and limping. Neither appeared to be unusually strong. I laughed and said, "So you're the muscle around here." The younger one responded flatly, "Yup."
The three of us lifted the box into the truck bed and parted company.