== From the section marked "Intentional" == 

 "Weight loss occurs when an individual is in a state of negative thermodynamic flux: when the body is expending more energy (i.e. in work and metabolism) than it is consuming (i.e., from food or other nutritional supplements), it will use stored reserves from fat or muscle, gradually leading to weight loss."…I think this statement could be made more exact, or at least give more exact understanding, by inserting the words "and excreting" between the words "expending" and "more energy".  I suppose one could argue that excretion of calories is covered by the "metabolism" in the parentheses. but it should have more emphasis than that.