Why do tounge twisters twist our tounges? (Why is it hard to say them!)

Question: Why do tounge twisters twist our tounges? (Why is it hard to say them!)
- Keywords:
  body,
  muscle,
  neuroscience
Asked by scientistswagsquad to Kat, Andrew, Katie, Sadaf on 18 Jun 2013.
- Andrew Swale answered on 18 Jun 2013:
  
  This involves the complex processes involving our brain that regulate speech
  
  Certain sounds are more easily confused in the brain and this can lead to ‘slips of the tongue’

Question: Why do tounge twisters twist our tounges? (Why is it hard to say them!)