Why do we get cramp in the water or when we sleep?

Question: Why do we get cramp in the water or when we sleep?
- Keywords:
  cramp,
  sleep,
  water
Asked by RubyDoobs to Theresia on 16 Nov 2014.
- Theresia Mina answered on 16 Nov 2014:
  
  Hiya!
  
  I normally don’t get cramp in the water and very rarely that I get cramp when I sleep. I think I am a good sleeper 🙂

Question: Why do we get cramp in the water or when we sleep?