Cheyne and Luis talk about how Luis had someone in his FIGHT class that didn't make it through the whole class and how one can look for certain stress level markers. These markers and others that Cheyne and Luis discuss can help you discern whether or not your at the most optimal for a certain type of workout. Cheyne also talks about his weekend trip to the California and his exposure to underground "wrasssling". During Cheyne's trip to California, he realized the difference in types of commutes between Cali and NYC. Not just the terrain but also the opportunity cost. And by opportunity cost he means how much is lost while in commute, not just in energy or money but just mental exertion.