Are nightmares bad for your health?

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Email not displaying correctly? View it in your browser. Does Sunscreen Ever Expire? Here's What to Know Is Peanut Butter Good For You? This is What the Science Says Good News: Sitting All Day Isn't As Bad For You If You're Fit Nightmares Are Scary. But Are They Bad For Your Health? Burning health questions? Email us TIME may receive compensation for some links to products and services in this email. Offers may be subject to change without notice.   Connect with TIME Health via Facebook | Twitter | Newsletters   UPDATE EMAIL   UNSUBSCRIBE   PRIVACY POLICY    YOUR CALIFORNIA PRIVACY RIGHTS   TIME Customer Service: 3000 University Center Drive, Tampa, FL 33612-6408   Questions? Contact health@time.com   Copyright @ 2017 Time Inc. All rights reserved.