SpeedStacker

Sports stacking, wouldn't ya know, started in California as a game to help children improve their coordination.

Sports Stacking involves stacking and unstacking cups.

From its humble origins, Sports Stacking's grown into a competitive sport with divisions including the 3-3-3, the 3-6-3, team relay, Time to Shoot For and the Cycle Stack.

ESPN's airing coverage of the World Sports Stacking Championships on August 21. You can buy Sports Stacking essentials here.

"Stack early. Stack often. Stack fast."