Unless the bike has a motor, I can't ride due to the knees. I can walk on flat surfaces-if I know I'll be walking for a while, I bring a cane or use my monopod.

The damage to my knee and ankle will probably be either with me a few more months or forever.

That possibility is another reason I really need to get out of this fat rut. Extra weight aggravates the joints, which are already damaged.
I guess I'm lucky in that, being tall, saying I'm overweight gets balked at-I don't look like a butterball, I'm just weighty.
The 4.5 hours between meals is where the junk food comes in. I sit at the computer at work and pick at the cherry slices right after lunch til quitting time; when I get home about 6, I'm starving and have to start dinner, so I grab a cookie. It's not that I eat a lot, I eat wrong. Then I don't burn it off.