I assume you meant "can" instead of "can't" in your post. I agree that mornings are my favorite time to ride. I tend to wilt in the heat and much prefer being a bit too cool to being too hot. I also pretty much stick to weekdays since the popular routes and trails are virtually empty when I'm out there. So I'm basically on an opposite workout schedule from when I was working (which, after 10+ years, seems like a long time ago).