Affect is how we feel, good, bad, etc. The body has a budget for everything, sugar, salt, etc. We can make deposits and take withdrawals. Affect is the current state of the body budget. [[stress]] within 2 hours of a meal actually reduces the effectiveness of the metabolism, making it as if we had eaten more calories. Affect is tied to the brain's beliefs about the state of the body. The brain is modeling the body using [[interoception]]. What your brain believes to be true about the metabolic state of the body. [[depression]] is a bankrupt body budget.