Grain products make the greatest contribution of to the diet.

Carbohydrates
Grains are the main source of carbohydrates in a diet, an example of which is wheat.

Pretty much everywhere: walking requires friction, driving around curves, steering a car with the steering wheel, starting fire with a stick, objects moving along a conveyer belt.

Iwould describe it as an overall negative image of themselves.  because they are anorexic, they must sometimes look at themselves as overweight or even obese. however, other people may comment on the being to skinny, which may cause them to see themselves as too skinny at other times.