The first thing that went for my fattie was anything bending over: sweeping up piles, putting on the kids' shoes, etc. Then came the stairs (putting away laundry).
Now when she bends over to put on her own shoes she sometimes breaks a sweat. 😂
Getting into small areas to fix things. I have crawl spaces in my attic in all 4 bedrooms where I keep things stored. I have gotten wider than the small doors leading into them so I have to squeeze in sideways.
When I was 400+ tying my shoes was very difficult so I agree with that too. I had to sit on the couch and pull my leg up and lean in the direction of the foot to tie the shoe.
I'm not a fan of washing dishes these days. My back starts to ache after a while, and I end up needing to finish the job by leaning on the counter, supporting myself with my elbows. It works, but it's a bit awkward.
