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A [[biphasic]] [[Template:Polyphasic Sleep Schedules|schedule]], which contains two [[cores]] at night, usually with a high total sleep time, close to a personal [[monophasic]] baseline.

A [[biphasic]] [[Template:Polyphasic Sleep Schedules|schedule]], which contains two [[cores]] at night, usually with a high total sleep time, close to a personal [[monophasic]] baseline.

== Mechanism ==

== Mechanism ==