That’s according to a new study from Princeton University. But if you’re one of the 15% who usually feels down, stick a few baby pictures in your wallet or keep them on your phone. Don’t have kids? Photos of other people’s babies and even baby animals can do the trick. The reason? A study at the University of Wisconsin-Madison found looking at baby pictures activates a part of the brain associated with positive emotions, which can boost your mood almost instantly.

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