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February 4, 2015 12:01 AM EST
Barker is the author of Barking Up The Wrong Tree

Look at pictures of sick people.

Via The Consuming Instinct: What Juicy Burgers, Ferraris, Pornography, and Gift Giving Reveal About Human Nature:

It’s legit. Here’s the study he’s referring to:

You looked at the picture above, right? Your immune system is already stronger. (You’re welcome.)

There are a number of other simple research-based tips for staying healthy and dodging illness:

This piece originally appeared on Barking Up the Wrong Tree.

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