When I was a kid, I loved when my parents put out our Slip 'N Slide in the front yard each summer. All the neighborhood kids would come over to cool off, laugh, and have fun. Recently my wife and I were lamenting the loss of carefree summers. We're not kids anymore; we have adult responsibilities. But there's still something in my brain, almost like a circadian rhythm, that's triggered by sunshine and summer heat that signals maybe it's okay to coast.