Clue: StairMaster aftereffect, perhaps

Answer: ACHE

Length: 4

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Similar Clues:

• Result of using a StairMaster, possibly (ACHE with 4 letters)
• Obvious aftereffects (SCARS with 5 letters)
• Aftereffect (SCAR with 4 letters)
• Emotional aftereffects (SCARS with 5 letters)
• Lasting aftereffect (SCAR with 4 letters)
• Dubliner's song about the aftereffects of his lifelong drinking? (MYWILDIRISHNOSE with 15 letters)
• Stairmaster surface (TREAD with 5 letters)
• Aftereffects (REPERCUSSIONS with 13 letters)
• Stairmaster part (TREAD with 5 letters)
• Complaint from one trying to concentrate, perhaps—and this puzzle's title (WHATSTHATRACKET with 15 letters)