i swam competitively growing up and still love to swim. I do water aerobics classes now that I like because they don't hurt my joints. Swimming is great for when you are first starting to workout I think because its really easy on your body. At this point though I have to agree that an hour on the eliptical does a whole lot more calorie wise than the swimming. However, everyone keeps saying variety really helps so I am sticking with the classes!