On Monday I was in Cancun, Mexico with sunshine and 87 degrees. When I woke up this morning (Wednesday) in Huntsville, Texas, it was also sunny. The difference is that it was about 35 degrees with a strong north wind.

I decided to wait for the weather to warm up before I ran. Yesterday I ran the treadmill because it was raining, so I was looking forward to today's run. The forecast said it would be 53 degrees this afternoon – good, but not great!

In fact, it peaked at about 44, just a...