How much you eat is just as important as what you eat, says the man narrating this Cleveland Clinic video. True. I'm thinking cashews right now -- good for me but not if I throw them back mindlessly.

Ah, portion control. A wise concept. Not always easy to manage, though. Back to the video -- it's a great one for helping to visualize appropriate serving sizes, like the following.

A serving size of cheese is equal to four dice. A baked potato: the size of a computer mouse. Meat, the palm of your hand. Peanut butter, the tip of your thumb. Veggies -- think one fist. Starches and fruits -- half a fist or a cupped hand.

Want a actual look at these suggestions. Click here. In a mere four minutes, you'll be educated on serving sizes, portion control, and you'll walk away with a few great tips for slimming down on snacking -- hint: don't eat from the bag, serve up a small portion in a bowl.

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