This new sport started in Europe and is slowly becoming a new workout craze. Aqua Cycling is a perfect workout for those with joint issues and osteoporosis. A swimming pool underwater bicycle is placed in a four-foot pool, positioning the cyclist waist deep in the water. An instructor leads a class in a unique combination of cycling and upper body workouts.  However, this new trend may help in losing weight, increasing strength and endurance, and relieving stress.