Related Clues:

• Show off a butterfly, perhaps
• Do the breaststroke, say
• Do the butterfly, perhaps?
• Be in shock from a sock
• Thick of things, in a manner of speaking
• Engage in some natatorial exercise
• "Jack's Mannequin" song to backstroke to?
• What Michael Stipe goes for at night?
• Exercise at the Y, maybe
• Part of an exercise regimen
• Do the breaststroke, e.g
• Do laps in a pool
• You might go for one at the beach
• Chasing opponents, one may initially feel dizzy
• Use a pool