A kayak roll (often referred to as an Eskimo roll) is the act of righting a capsized kayak by use of body motion and/or a paddle. Typically this is done by lifting the torso towards the surface, flicking the hips to right the kayak, and applying a small force by means of the paddle to assist the torso back over the boat. The roll is an essential for paddlers who attempt serious whitewater (Class IV or greater), as exiting the boat and swimming gives the paddler less maneuverability and control, and thus leaves him/her more exposed than in the boat.