Here's a handy way to estimate portion sizes.

For those who struggle with trying to visualize diet recommendations such as "1 cup of pasta",

• 3 ounces of meat is the size of a deck of cards
• 1 and 1/2 ounces of cheese is the size of 4 dice
• 1 cup of cooked cereal or pasta is the size of a baseball.

(h/t to Consumer Reports magazine!)