It's not all that fat you eat, it's the lack concrete hitting your feet.
Study of Amish in Ontario...
From Old-Time Fitness in Old-Order Amish - Trustworthy, Physician-Reviewed Information from WebMD:
"Even though they ate the high-fat, high-sugar diet typical of pre-World War II Americans -- meat, potatoes, gravy, eggs, garden vegetables, bread, pies, and cakes -- the Ontario Amish were remarkably fit. Only 4% were obese and only 26% were overweight.
How did they do it? Hard work -- and lots of foot power. Their weekly exercise was equivalent to that of long-distance runners. Men averaged 18,425 steps a day. Women averaged 14,196 daily steps.
'The Amish were able to show us just how far we've fallen in the last 150 years or so in terms of the amount of physical activity we typically perform,' Bassett says in a news release. 'Their lifestyle indicates that physical activity played a critical role in keeping our ancestors fit and healthy.' "