Lemons and other citrus fruits can help relieve stress. Photo: Getty Images

OK, you're stressed. And you're probably not living up to those New Years resolutions, which makes you more stressed.

But now you've leaned how to calm yourself down, quick.

And it turns out that food can help reduce stress too.

Remember learning about acid and alkaline pH levels in your high school biology classes? If not, no worries, we're going to explain how they affect your body, and which foods and drinks will help you achieve and maintain a balance in your body chemistry.

Stephanie McClellan, MD, and Beth Hamilton, MD, the authors of So Stressed, The Ultimate Stress-Relief Plan for Women, say that when the body is stressed on a cellular level it becomes acidic. So to counter that and even out your pH levels -- which makes your body better able to absorb nutrients and expel toxins -- you'll need to eat alkaline foods and avoid acidic ones.

It seems counterintuitive, but citrus fruits like lemon, grapefruit and lime are among the most alkaline foods.

And sorry, coffee fiends, but your daily cup(s) of Joe aren't doing you any favors because it's super acidic and can actually make you even more stressed out. Choose green tea instead, for a caffeine fix that's easier on your body.

Here's a list of some more alkaline nibbles.

Fruit: watermelon, mango, papaya, melon, apple, pear and kiwi
Veggies: broccoli, asparagus, spinach, beets, squash, zucchini, sweet potato
Nuts/Oils: almond, flaxseed, olive
Sweeteners: Stevia, maple syrup, raw honey

Now that your diet is properly balanced, check back next week for a list of even more quick and easy stress-relievers (there's chocolate involved, yay!)