clunk, clunk. clunk--an old man sprinting

I jog up to my chosen starting point, and put on a colossal burst of energy as I cross the stripe on the asphalt. My whole body shakes. I begin well, concentrating… “knees, toes.” I’m actually thinking about running on my toes and picking up my knees. Supposedly, this is what one must do to run at the absolute fastest pace possible.