Top 10 Worst Things for Your Immune System

Kick these surprising habits to keep colds, flu and other bugs at bay.

by the Editors of Prevention.com

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Top 10 Worst Things for Your Immune System // Couple playing in snow (© Image Source/Getty Images)

Muscle Up Your Immunity

Staying healthy isn't just about using hand sanitizer and avoiding coughing co-workers.

It turns out some pretty surprising daily habits—like how you fight with your husband or whether you stay up late for Letterman—can impact how well your body fends off colds, flu and other pesky bugs. Here's a list of science-backed tips to add to your stay-healthy arsenal today.

>> Find Out If Your Immune System Needs a Boost