FlyHigh wrote:If you want to actually lose weight (or, like me, eat pretty bad and keep the weight off), you have to run, biking/elliptical/swimming isn't really going to do it IMO. Just bang out 15-20 miles per week and you'll be fine.
There isn't really a big difference when it comes to cardio... and swimming is definitely better than running. Works way more muscle groups, and is far less damaging to your body (running is really hard on your knees, ankles, etc.).
If you really want to lose weight, weightlifting is way better than cardio at that. Cardio is really inefficient for weight loss.