Related Clues:

• Some blinks
• Human quirks
• Nervous spasms
• Muscular jerks
• Tetanus symptom
• Nervous contractions
• Jerks that can't be helped
• Nervous reactions
• Signs of nervousness
• Peculiar mannerisms
• Sudden movements
• Bursts of energy
• They might be knee-jerk reactions
• Obsessions
• Involuntary muscle contractions