Related Clues:

• ___ cycle
• What an alarm may end
• Radiation dose
• Berth rite?
• A dangerous thing to fall into
• Sleep phase, briefly
• Rock band fronted by Michael Stipe
• Catch some Zs
• Sleep stage abbr.
• Out-of-it state
• Dormancy
• Dream state acronym
• Zombie-like state
• Band with the #1 album 'Monster'
• "Nature's soft nurse," to Shakespeare