I just want to say, and I don't mean to discourage you, any exercise is good, but to the best of my understanding swimming tends to tone you up rather than reduce fat. I believe it has something to do with being in water. Perhaps try some Sprint/Walk, Sprint/Jog intervals or something like that? I use that as a regular part of my workout routine. Oh, and don't stop swimming. Toning is good stuff. In fact, I think it's more worthy of your efforts than fat loss (unless you're significantly overweight). There's my two cents, heh heh.