If not for wheelchair ramps being the law of the land here in the USA, I never could've worn the hard rubber tire material off of my chair. Using that manual wheel chair all over town for the last 12 years before I, of necessity, needed an electric one, kept me exercising to the extent that I could, That helped me a lot, I am sure.

Donuel, you are correct. The narrow one is easier and provides more physical support for even a big guy like me.

Yep, "it's tight like that!!"----as the song says.

Art Thieme