Jim Boulden: If your body budget is running a deficit, you're going to feel like crap. And your brain is going to attempt to make sense of that crappy feeling. Our brains make sense of sense data and the sort of effect that comes from those sense data. In a weird kind of way, we get ourselves into problems sometimes when we reduce our spending, so to speak. But actually it's kind of rational. You could think of it as rational from a body budgeting standpoint,. Even though it's very, very, very problematic and undesirable for our outcomes.