Originally Posted by OHBH
It sounds like your only cardio is swimming, and unless you are already an great swimmer you really aren't getting a good workout from doing it. Granted the extra weight makes running a bit too rough on the joints and swimming is a nice break for them but unless you really challenge your heart and lungs you will not see results. I like to use a stair climber when I don't feel like running but I always have my heart rate monitor on and make sure I am in the 155-165 bpm range which is a good range for training aerobic capacity, though this will depend on some factors http://www.active.com/fitness/Articl...art_rate_zones
I guess this could be it and yes I am a terrible swimmer, but I am constantly pushing my self and always am breathing really hard after my swims. I have also increased my distance each week over the same hour.