A speed boost is a short increase of speed that the player receives in some sports when the player does a certain move.
In cycling, the speed boost is given to the player when he/she drafts. This means getting into position behind another biker. In Power Cruising, the player must watch the boost meter on the side of the screen; the closer it is to being filled, the faster the boost. The boost will be released when the player will give a slight jerk to the Wii Remote and the Nunchuk. In Island Flyover, to receive the speed boost, the player should just give an onward slight jerk to the Wii Remote.