If you have checked your sleep tracker and noticed “core sleep” and “deep sleep,” you may wonder what they mean and which one matters more. Deep sleep is a specific sleep stage associated with physical recovery, memory consolidation, and feeling rested. Core sleep is usually a broader term used by
If you have checked your sleep tracker and noticed “core sleep” and “deep sleep,” you may wonder what they mean and which one matters more. Deep sleep is a specific sleep stage associated with physical recovery, memory consolidation, and feeling rested. Core sleep is usually a broader term used by