Possible Clues:

• Make one's head spin?
• Debut sport at the Paris Olympics, or what 16-, 22-, 36-, and 46-Across do to their circled letters
• Make one's head spin on a dance floor?
• Rap music accompaniment, perhaps
• Perform spinning acrobatics to music
• After rest, great dog overcomes cold having energetic fun
• Musical acrobatics could produce bad neck and ear
• Make one's head spin on the floor?
• Routine with a one-handed freeze, say
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