Related Clues:
- Muscular contraction
- Sudden twitch
- Something you can't control
- Silicon Valley product
- Jerk or twitch
- Uncontrollable jerk
- Kindle download
- It can cause one to be a real jerk
- Programmer's solution, briefly
- Muscular problem
- Uncontrollable movement
- 'Killer' program
- Workout pain
- Unintended movement
- Muscle attack