nutritionist jax hubbard can show us what a normal serving should look like. >> well, it's always good to take things in our surroundings to use as a standard for determining portion sizes. for example, one slice of bread is about the size of a cd case. a serving of cereal should be about the amount that'll fit into two handfuls. a serving of fruit is about the size of a tennis ball or your fist. a serving of meat is about the size of a deck of cards. so when you're trying to portion out your diet, make sure that you're keeping these tips in mind. >> okay, so, eating a tennis ball may not sound appetizing, but i guess it's a good frame of reference when determining your serving size. thanks, jax. >> thank you. >> this report i is brought to u by digitaltrends.com. >> i'm here at the sony store in l.a. to give you a few game and gadget suggestions that won't break the bank, and they're family-friendly picks as well. let's start off with a couple of games, including "bejeweled 3" from popcap, now available for playstation 3 as well as xbox 360, nintendo ds, and the pc. this is the latest

nutritionist jax hubbard can show us what a normal serving should look like. >> well, it's always good to take things in our surroundings to use as a standard for determining portion sizes. for example, one slice of bread is about the size of a cd case. a serving of cereal should be about the amount that'll fit into two handfuls. a serving of fruit is about the size of a tennis ball or your fist. a serving of meat is about the size of a deck of cards. so when you're trying to portion out your diet, make sure that you're keeping these tips in mind. >> okay, so, eating a tennis ball may not sound appetizing, but i guess it's a good frame of reference when determining your serving size. thanks, jax. >> thank you. nice. oh... oh! oh! red! red! red! yes! yes! come on! oh. no! oh... bummer. [children shouting] hoops? yeah. sure. sure. announcer: moms everywhere are finding ways to keep kids active and healthy. works every time. announcer: get ideas. get involved. get going at letsmove.gov. we can all be energy savers. turn off lights, use energy saving light bulbs, and turn off electronics a