The researchers will test the participants' glucose tolerance, the time it takes for digested food to transit through the intestinal tract, and the amount of calories in the patients' stool.

CNN: Can you smell obesity?

Research studies have found that such a regimen results in modest weight loss, improved glucose tolerance in people at risk of developing diabetes and other benefits, says David Bassett Jr.

WSJ: Do the Fitness Math: Gym vs. Stairs

They also put on more fat and exhibited reduced tolerance of glucose, despite eating comparable amounts of food and moving around just as much.

ECONOMIST: When��not just what��mice eat affects how fat they get