sleep
Sleep is a natural state of rest during which voluntary muscles are relaxed, sensory activity is reduced, and the brain goes through different stages of unconsciousness, vital for overall rejuvenation and physical and mental health.
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Related Concepts (21)
- bedtime routines
- biological clock
- circadian rhythms
- consciousness
- daytime sleepiness
- dreaming
- insomnia
- melatonin
- napping
- narcolepsy
- restless leg syndrome
- shift work sleep disorder
- sleep aids
- sleep apnea
- sleep deprivation
- sleep disorders
- sleep hygiene
- sleep paralysis
- sleep patterns
- sleep quality
- sleepwalking