Though we like to think of sleep as a time for the mind to relax, it often does the opposite. During rapid eye movement (REM) sleep, our brains are fully active inducing dreams and, unfortunately, nightmares.
If you’ve ever had an anxiety dream where your teeth are falling out, or you’re naked in public, you can thank your brain for working overtime during REM sleep to process your emotions. This can look like a disturbingly vivid dream that leaves you questioning reality when you wake up.
