I find it much easier to do exercise in the cold than in the heat. In the cold it's just a matter of having the right gear and layers. In the heat, there's nothing you can do. It'll be extremely hot, you'll be sweating like crazy and get tired quicker (or at least I do).
Well... exercising in the cold makes you hotter, that makes sense. And I bet they have Canada-level of socks/parkas/etc which you can remove as you get hotter.
