My left hip flexor is so tight it hurts to the touch. I have a knot in the arch of my foot and another in my ass. My trapezious muscles on both sides are pissed and doing interesting things to my posture. But at mile four of my favorite six mile loop there’s a section of trail where the rhythm is so good, the slope so perfect, the air so clean that instead of feeling liking a broken watch, or a ticking time-bomb, I feel like I have wings. Like if I held my arms out and pushed the cadence just a little more through the berms and over the whoops I could take flight. It hasn’t happened, yet, but the potential keeps me coming back for more.