Keep in mind that I still have a lot of weight to lose, but I have definitely had improvements in mobility. It's a lot easier to climb stairs without carrying an extra 120 pounds! Easier to get in and out of chairs, etc. My knee and foot pain has improved a bit, but it's also counteracted by the fact that I'm exercising more. I also have better flexibility -- for example, no problem bending down to tie my shoes. My blood pressure and blood glucose are now on the low side of normal with no medication. And that's all on top of the benefits of not always being the fattest person in the room, being able to fit in chairs, if I ever fly again I won't need a seatbelt extension, I can buy clothes from some mainstream brands (still XL or XXL, but in brands that don't make clothes as big as I used to be).