While all exercise can produce greater health and longevity, studies point to swimming as one of the best choices for doing so. Here are just a few of the many reasons why: Counts As Both Cardio and Strength Training With Low Impact: While swimming, if you aren’t moving constantly, you’re sinking. (Forced cardio!) Plus, water is about 800 times denser than air, so your muscles are under constant resistance. Low impact means swimming is a great workout for injured athletes, who need to take it easy on their joints, but it may also mean more results. Swimming allows you to workout at higher intensities and keep you going even on those tough days. Improves Muscle Definition and Strength: Swimmers gain muscle strength throughout the entire body. Where runners see muscle build in their legs, swimmers utilize more muscle groups to move through the water. While the legs kick, the arms…