What a difference a few degrees and a change in the humidity can make. On Tuesday, I ran the local Firecracker 5K and withered woefully. But today, I ran in the Tabitha House 10K and enjoyed it nearly to the very end (when I simply gave out due to poor conditioning). The temperature was cooler by only about eight degrees at the start of the race. But, the humidity was down substantially. It is amazing what a difference such a seemingly small change can make.