How exciting, another excuse to eat chocolate. Scientists actually suggest eating half a square of dark chocolate before getting on the treadmill or tackling anything requiring physical exertion. YEAH! But you did note that is 1/2 square not a chocolate bar! A study conducted at the University of California at San Diego suggests this could give you strength to go 50% longer than you normally would. Scientists say the health-revving flavonoid in dark chocolate binds to receptors in muscles and prevents fatigue. Why not go for it and give it a try?