Sleep and its importance

In this topic

• Sleep is not the brain switching off
• Two kinds of sleep and the 90-minute cycle
• What sleep is for, and how much is needed
• Dreams and sleep hygiene

Key terms

• Sleep
• Inhibition
• Reticular formation
• Hypothalamus
• Melatonin
• Slow-wave sleep (non-REM)
• REM sleep
• Sleep cycle
• Biological clock
• Growth hormone
• Memory consolidation
• Sleep hygiene

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