OK, I'll be the first here to admit I'm in HORRID shape. Yep. I'm trying to do something about it, and I'm slowly getting there, but it's going to take time
During the blackout, I walked. Averaged 2.5+ MPH with my BOB for the first 4.6 miles, and then managed to promote a lift. I would have walked all 15 miles home, but it would have been more of a bear than I wanted. Getting in shape was item one in my personal After Action Report. I got a BUNCH more serious on my diet (yes, diet - exercise won't do it alone in my condidtion), and I've walked a mile or 2 every day since then