On a more positive note.
Five years ago, I participated in Wayne's Christmas snowshoe hike. I was 300 lbs, and barely made it, with chest pains, constant shortness of breath, and a twisted ankle. This year I started Christmas Eve with an hour of weight training, then did the 3hr, 8km uphill hike again, at -10 Celsius, through a foot of unbroken powder. I didn't even break a sweat, carrying a 30lb pack. Fuck being fat and lazy.