Okay, I'm not really going to go out and eat a double cheeseburger this minute, but it does make sense. There are plenty of group with low rates of heart disease who never worry about their dietary fat intake. The thing that the study points out is that diet alone is not enough. You can't just cut the pizza and french fries from your diet and expect to be suddenly healthier.
It means that you can't sit around on your butt and expect to be healthy. You have to go outside. You have to get exercise and work your body hard. </talkingtoself>