Sleep

The marine mollusks display behavior that resembles sleep, including cycles of rapid eye movement 

Weekday sleep deprivation with weekend make-up sleeping seems to be worse for blood sugar control than even chronic sleep deprivation alone.

There are plenty of theories, but nobody really knows for sure

Back-and-forth motions may tweak the sensory organs that control our balance and spatial orientation

Mice that lack these genes do not engage in rapid eye movement sleep

Study proposes novel sleep theory, but whether it can explain infant death syndrome remains less clear

Poor-quality sleep may heighten behaviors including hyperactivity, compulsions and aggressiveness

Intriguing new research suggests a positive sleep role for a meaningful life

The brainless marine creatures are the simplest organisms known to seek slumber

Studying the dreaming brain offers a window on consciousness

Without a nighttime reset, synapses could burn out like an outlet with too many appliances plugged in 

New research suggests sleep doesn’t just help learning, it helps “relearning” as well