Right on the subject of our awful sedentary living style and how bad it is for you compared to the much more active lifestyle of our hunter-gatherer forebears, six researchers, four anthropologists, a primatologist, and an archaeologist from different universities and research centers in the United States funded by the National Science Foundation, studied the energy expenditure in a modern day hunter-gatherer group of people, the Hazda, who live in Northern Tanzania, and compared their energy expenditure with that of Westerners living in the United States and the United Kingdom.
Overall physical activity level was greater among the Hazda than among the Westerners. But there was no difference in average daily energy expenditure (calories-out), a finding that challenges energy expenditure and sedentary lifestyles as causes for overweight and obesity in Western countries.
It is, therefore, a better bet to say the obesity epidemic in Western civilization is being caused by eating too much food and eating fattening foods rather than by a sedentary lifestyle. It was not only this one study that found our total energy expenditure not the guilty culprit, the “Hunter Energetics and Human Obesity” research cited other research that came to the same conclusion.