Two weeks out from the Chicago Marathon, Bob's body has been screaming for weeks and he finally finds out why: a routine physical, an unexpected anti-TPO blood test, and a fresh subclinical hypothyroidism diagnosis with hormone replacement starting today. He and Sass talk through what it means for Tunnel Hill, why a tired Adderall-fueled summer might've masked it, Sass's plantar fasciitis revenge plot, and the dream of running a half marathon through Italy with a baguette.