Are You Burning More Calories Than a Sedentary?

A study of a tribe in tanzinea called the hadsa. They tend to walk about four to seven miles a day between collecting water, hunting down food and other daily activities. But once accounted for their body composition, they were burning no more calories in total than the sedentary person can of going about their day to day activitys in industrialized western society. So that led to the notion that energy expenditure is in some sense constrained.