Related Clues:

• Patient reply, perhaps
• "That feels g-o-o-o-d!"
• Utterance of amazement
• "Say ___" (doctor's order)
• ''That's a relief!''
• Hot tub user's sigh
• Response to a massage
• "How soothing!"
• Ooh and --
• Reaction to a cold drink on a hot day
• Utterance upon entering a hot tub
• Sound in a hot tub
• ''That's perfect!''
• Sauna sound
• "Yeah, that's the spot!"