In Crunch Exercise: What do you think the most effective exercise is? | MyFitnessPal.com

I was always told running and swimming were the most effective forms of exercise for burning calories, as they both use almost every muscle in the body. I find running far more tiring than rowing, but I am prepared to believe it burns less. So what do you find the most effective form of exercise to be? Posts by members, moderators and admins should not be considered medical advice and no guarantee ...Crunch Exercise