It could be the 4 hours of sleep I averaged over the weekend.
It could be one or all of the four planes I stepped on over the course of one week.
It could be how I pumped my body full of alcohol rendering my immunity defenseless.
It could be the hour I spent walking home in the rain after getting lost going back to the hotel after the main event.
Whatever it was, I would gladly endure the endless hours of sleeping, the coughing, the chills and heat flashes and the numerous trips to the bathroom to blow my nose for the opportunity to do it all over again next year.