Behavior has to be the biggest. If we look outside the US and populations known for longevity we see exercise and lower caloric correlations. Looking at studi

Behavior has to be the biggest. If we look outside the US and populations known for longevity we see exercise and lower caloric correlations. Looking at studies surrounding exercise, even simply walking 30 minutes every day leads to better quality life in terms of health including preventing cognitive decline. Exercise is also associated with preventing the shortening of telomeres which scientist believe are connected with aging.