Kayaking is a fun activity that involves moving through water in a small water vessel with the aid of a double-bladed paddle. It allows the boat driver to maneuver through waterways by sitting face-forward and propelling ahead with alternating side-to-side paddle strokes. Kayaking is a low impact activity that can improve your aerobic fitness, strength and flexibility. Specific health benefits include: Improved cardiovascular fitness, increased muscle strength (particularly in the back, arms, shoulders and chest) from moving the paddle.