Live Near The Gym - Get Thin

This is a crazy bit of research. There seems to be a correlation between living near the gym and your waist size and body fat. People with at least 6 physical activity facilities within 1km of their home have 0.8% less body fat and a waist 1.2cm smaller then the average. Conversely, living near fast food outlets increases waist size by 0.2cm. Can you believe that someone actually undertook this research?