I realized that I phrased my point very poorly. I didn’t mean that people don’t do sports, eat healthy, and live fulfilling lives. They sure do. What I meant was that people (like when you ask them personally or in a survey) tend to exaggerate their healthy/good habits and downplay the bad ones. So it’s good to take self-reports with a grain of salt. It’s a well known kind of bias (social desirability).