Fatigue, burnout, and feeling overwhelmed. That's what can happen when you overdo it. It's not too far off of how you feel when you…underdo it? Jesse and Lauren reply to a marathoner who may be over-training. They talk about the controversial (and maybe over-engineered) Nike Vaporfly shoes that helped achieve a 2-hour marathon time. They respond to a listener who's worried about her husband's complete lack of exercise. And they talk about how to not overdo it at work. Plus, the Work Play Love duo shares the origins of the Flat Bruce, offer advice about tempo workouts, and more.