Burn calories and keep the music going: kinetic energy from running, jumping, or other motion is converted into electricity by the Dancepants kinetic music player. The internal energy makers generate juice only when the wearer is in motion, the harvested kinetic energy powers the connected MP3 player, and so long as you keep hustling, the tunes will keep flowing. A lead links a disc at the ankle of the pants to the music player in the front pocket and to ear buds. Run, run, run...