How do you think we get the rates of diabetes and obesity we have in the US, without that being true for most people in most places and in most social circles? Rich social networks tend to live much healthier lifestyles than average. Normal is fried starch and tens to hundreds of ounces of soda more days than not, and exercise is that maybe you golf sometimes or play in a seasonal company softball league (drinking way more calories than you're burning, almost certainly).