Confession: Before a hard run (sprints, hills, or anything over ten miles), I put on Firework by Katy Perry and either A. Dance around the house like a seven year old, i.e. flinging limbs and twirling, or B. Blare it on the car stereo while driving to a new trail at the break of dawn, singing loudly and probably out of tune, a.k.a. singing like I just don’t care.
It works every time.