Why are fever dreams so scary?
Approved answer
Why are fever dreams so terrifying?
During REM (rapid-eye-movement) sleep, which is when most dreaming takes place, the body's ability to regulate temperature becomes significantly impaired. As a result, if you have a fever, your temperature may rise much higher than usual during this stage of sleep. This elevated temperature contributes to increased brain activity, manifesting as vivid and often frightening dreams.