You've probably seen the ads about how toning shoes can give you more shapely legs and a "better butt." But some manufacturers don't stop there, suggesting their products also ease stress on joints and improve circulation. Truth or fiction?
Some athletes consume sodium bicarbonate (also known as baking soda) hoping to neutralize the lactic acid that builds up in blood and muscles during intense exercise and thus causes fatigue and impairs performance. Does it boost athletic performance?