To start with an aside - I don't think I've mentioned here that nowadays I count my grumpiness as a life skill.
Today I spoke with my brother about his life skills, which now include moving shit. Serendipitously, I had asked him whether he wanted a fridge / freezer pair at the exact time he was thinking about getting a new fridge. This morning I confirmed that the size was good. So he rents a trailer and comes right over to pick them up.
I saw him use a perfect bend-at-the-knees lifting technique to pick them up and put them on the trailer. No tipping, dragging, or sliding.
Blew my mind.