Smooth, low-impact, and non-load bearing, the exercise of rowing spreads the intensity of exercise evenly over the body’s three major muscle groups: the torso, legs, and arms. This even distribution of exercise provides for a toning effect for all of the muscles, as opposed to working for only an isolated group. Vigorous rowing will improve aerobic capacity, develop muscular strength and endurance, improve fl exibility and expend lots of calories, which aids in weight loss. The rowing action provides a thorough workout for muscles in your arms, chest, shoulders, abs and upper back. This exercise is low-impact and easy on the knees and ankles and high calorie burner because it uses so many muscle groups. Rowing is also great for joint health since the joints move through a wide range of motion and is a superb aerobic and cardiovascular workout. * Spa heat increases heart rate. To prevent injury, exercise should be performed with water temperature between 77 to 82F.