I took a day off from work, was about to go ride my bike, and I blew my tire while pumping it up. I do not feel like spending 30+ minutes trying to change it and I ran long yesterday.
Which means i have nothing left except to go swimming.
So too, though, would be wasting 30 minutes of a race changing a flat because you're out of practice. So the bright side is that opportunity knocked with some practice?