In just a few hours, I’ll be making my way to the starting line of the Aflac Iron Girl Lake Las Vegas Triathlon. As I get ready for bed in my cozy hotel room at the MonteLago Village, I’m feeling surprisingly calm, especially considering how queazy I felt all day. A combo of nerves and dehydration will do that to you. It’s Vegas, baby, and it’s effing hot. It’s the kind of heat you don’t necessarily notice until you guzzle an entire 16.9-ounce bottle of water in one gulp and still feel parched.