Fatigue, burnout, and being overwhelmed. That’s what happens when you overdo it. It’s not too far from how you feel when you…underdo it? Jesse and Lauren reply to a marathoner about over-training. They talk about the controversial (and maybe over-engineered) Nikes that played a role in a 2-hour marathon. They respond to a listener who’s worried about her husband’s lack of exercise. And they talk about how to not overdo it at work. Plus, the origins of the Flat Bruce, tempo workout tips, and more.