Body Clock

Body clock affects a subject in the following ways. The subject's need for sleep is reduced by half. A creature needing 8 hours of sleep will only need 4. However, wizards are not able to memorize spells; "real" time must pass for this to occur. The subject's need to breathe is reduced. He breathes only 10% as often as normal for the duration of the spell, enabling him to hold his breath 10 times longer than normal and use less air in enclosed situations. The subject can set an internal "alarm clock" to alert him when a specific amount of time has passed. The subject then hears a brief ringing in his ears, audible only to him. The ringing is loud enough to wake the subject. He can set as many internal alarm clocks as he wishes, as long as they all occur within the duration of the spell. The spell has no effect on movement, spellcasting, or any other normal activities.