But, how do dreams work? Most dreaming occurs during REM (rapid eye movement) sleep, a stage of the sleep cycle where brain activity increases, the body becomes temporarily paralyzed, and vivid dreams ...

People often report having unusually vivid or bizarre dreams while on holiday, and science suggests there are clear reasons ...

While cutting back on caffeine will not directly cause vivid dreams, there is a plausible link. Since caffeine can reduce ...

The simulation hypothesis states that we are characters in a computer simulation. Scientists have taken this hypothesis seriously I think because it offers interesting potential explanations for a ...

Ever wake up convinced something happened that actually didn’t? That vivid memory of a conversation with your friend, a movie you’re sure you watched, or an event that feels completely real but never ...

During periods of rapid eye movement (REM) sleep, brain activity often resembles that of awake behavior. At times, the brain can actually be more active during REM sleep than when you're awake. It's ...

You know as well as we do that the amount and type of sleep you get every night can significantly affect your mood, energy level and comfort throughout the day. But isn't it odd that sometimes you ...

Young jumping spiders dangle by a thread through the night, in a box, in a lab. Every so often, their legs curl and their spinnerets twitch—and the retinas of their eyes, visible through their ...

Most creatures sleep, but until now, REM (rapid eye movement) sleep, the phase of sleep in which dreams occur, was thought to be exclusive to vertebrates. Octopuses appear to be the first ...

This article originally appeared in Knowable Magazine. Young jumping spiders dangle by a thread through the night, in a box, in a lab. Every so often, their legs curl and their spinnerets twitch — and ...

Like humans, dogs experience several sleep cycles, including periods of wakefulness known as non-rapid-eye-movement sleep and the deeper stage of rapid-eye-movement sleep, according to the American ...