somn/o, somn/i (19/20)

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somn/o or somn/i is a combining form that refers to “sleep”.

Sleep is a naturally recurring cycle of mind and body. It involves altered consciousness, reduced sensory activity, decreased muscle activity, and the inhibition of almost all voluntary muscles during rapid eye movement sleep. As a result of sleep, the body and mind are reenergized, allowing a person to wake up refreshed and alert.