Urethane Treadmill

The open driveway was practically glowing under the midday sun, but the real track was parked right beside the garage door. An upside-down skateboard was resting on the asphalt, wheels pointing straight up like four tiny turbo engines. Challenge accepted! I sprinted down the pavement, launched off the curb, and planted both sneakers dead-center on the front urethane wheel. It kicked into a frantic, buzzing spin the second my soles made contact! I locked my balance, pumping my legs in rapid rhythm to match the rotation like a miniature treadmill. When the momentum finally smoothed out, I hopped clean onto the warm concrete. Talk about a prime warmup!