Is there a limit to human endurance? Science says yes: Some say the breaking point is all in your head, but new research suggests it's also in your gut - Science Daily

Is there a limit to human endurance? Science says yes: Some say the breaking point is all in your head, but new research suggests it's also in your gut  Science Daily

From the Ironman to the Tour de France, some competitions test even the toughest endurance athletes. A study of energy expenditure during some of the world's ...