Physics!!! Riding in cold weather is harder

http://velonews.competitor.com/2013/...so-hard_277626

So the next time I am wilting in the hot summer sun, I can remind myself that at least the air is less dense...

That's interesting. I always assumed it was the layers of clothes and heavier shoes.

I'm a physics nerd and a winter rider, and I LOVE this explanation... :-D

But really, even cycling with the same amount of clothing you can feel how you have to work harder at lower temperatures.