Tāmasic – consumes a lot of food, whether food is good or not.
Rājasic – eats a lot only if he likes the food.
Sātvic – a person will eat just enough to maintain a healthy body.
Tāmasic – eats at irregular hours or eats lying down.
Rājasic – eats while working or walking.
Sātvic - sits down and eats quietly, slowly, at regular time.