Swimming is a great form of exercise to do. But...bear in mind, that swimming is a non-impact activity...whereas running is most certainly a high-impact activity...so the two are quite different. Since it's quite difficult to track calories-burned in the water, it's hard to say exactly how many calories you'd be burning swimming an hour of breaststroke. From my own personal experience, I would say that swimming freestyle would burn quite a bit more calories than breaststroke, simply because your arms are being raised above your heart. The other thing I noticed about swimming, is that I tend to get very hungry afterwards...more so than with any other form of cardio exercise. I have heard that this has something to do with a lowered body temperature...and if you immediately bring your body temp up right after getting out of the water (such as sitting in a steamroom or sauna), it will curb the intense hunger feeling that usually occurs after swimming.
Last edited by nscrbug; 05-27-2009 at 04:46 PM.