Shake

Have you ever had the experience that when sit in the pew and someone shakes his/her legs vigorous and you thought you either fainted or there's an earthquake going on.

Here’s the search from the web.

Why do people shake their legs?

1. Concentration

2. Restlessness or Boredom

3. Analeptics

4. Disabilities and Conditions

• Restless Leg Syndrome
• Attention Deficit Hyperactivity
• Autism

Why shouldn't we shake our legs while sitting?

Besides all above causes for shaking legs while sitting, I just thought that should be, respect others, especially, when you are sitting in the pew.