You've heard the commercials.'Eat this yogurt!' It's full of probiotics. They're super good for you… more specifically, your gut.But have you heard of prebiotics? Turns out they might be good for you, too.Robert Thompson works at the Stress Physiology Laboratory in the Department of Integrative Physiology at CU Boulder. Thompson's been studying these lesser-known dietary building blocks.Listen as Thompson describes what prebiotics are and what the study found.