THE SET POINT ASSUMPTION.- Most people attribute hunger ( the motivation to eat) to the presence of an energy deficit, and they view eating as the means by which the energy resources of the body are returned to the optimal level --energy set point---
Typical assumptions
Eating works like a thermostat regulated system in a cool climate.
All set point systems are NEGATIVE FEEDBACK SYSTEMS---systems in which feedback from changes in one direction elicit compensatory effects in the opposite direction. Turns on when energy is needed, off when set point is reached.
HOMEOSTASIS-- (body temperature)-a stable internal environment which is critical for mammal's survival.We eat to keep the set point