Well, since I started working out regularly two years ago, I've definitely noticed that shoveling snow is a lot easier. I've always been able to slog through it, but I'd be sore afterwards. Now, I can clear the driveway, remove the snowplow's gift at the end, and clear the debris from my neighbor's driveway without any trouble. It's nice.

FWIW, my motivation for working out is to be better at parkour. It's helped a ton for that, but most people don't do that sort of thing regularly. Being good at shoveling snow is just great.