/u/ssinatra3's posts
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Does the human body naturally require about 8 hours of sleep per 16 hours awake? Or was this an adaptation to earth's 24 hour daylight/night cycle?
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list