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Hellin Kay
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Hellin Kay

Photo: Getty Images

I watch what I eat, mostly. I'd like to think I live by nutrition guru Arielle Fierman's 80/20 rule: A majority of the time I'm super health conscious, while the other 20 percent I let myself indulge and try not to feel too guilty about it. But even when I'm being my healthy self—living off leafy greens and grilled chicken—I often consume more than my body needs.

Related: The 6 Dirtiest Eating Habits and How to Break Them

Last week I wrote about dirty eating habits, and mine is definitely lack of portion control. It's hard when restaurants serve gargantuan helpings and I eat at a cafeteria for lunch all week where I often fall victim to the "my eyes are bigger than my stomach" scenario—yet still eat everything on my plate.

So with Fierman as our guide, we decided to create a chart to show what a serving size should be in visual terms. Some portions seem smaller than we'd imagined, but we know that if we become more aware of the amount of food we should be putting in our body, we will not just eat less, but in turn, slow down, take time to chew, and even enjoy our food more.

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Hellin Kay

Protein (fish, chicken, beans): One deck of cards (3 oz)

Eggs (white and yolk): One to two per serving

Grains (rice, quinoa): The size of a tennis ball (1/2 cup)

Oils: The size of a golf ball (2 tbsp)

Nut butter: The size of the tip of thumb (1 tbsp)

Nuts: One handful (1 oz)

Fruit: The size of a fist (1/2 cup)

Vegetables: As much as you want