when you eat with your nondominant hand, you eat a lot less because you're aware of every bite. >> reporter: tip five, use smaller bowls. >> gio, what's up with the big bowl? >> it's good. >> why don't you go for one of these? when you eat from a big bowl, you're going to eat up to 16% more. >> reporter: tip six, don't be duped. we see all this low fat, reduced fat. what does it mean? >> don't be dupd by marketing claims. a recent cornell study showed that people ate a whopping 28% more when it said low fat. >> reporter: because they think it's healthier 37. >> right. so they eat more and blow their diets. >> reporter: gio benitez, abc news, new york. >> i think we meet the color test here. i don't see protein. >> no. protein is a big thing. twinkies, i would love to have one of these. wait a minute. this expired in september, 2012. >> probably radioactive at this point. >> 2012. thanks, guys, i appreciate that. but i do think eating with the nondominant hand.