…even if they fall down the stairs! A study in the journal Sleep found 80% of sleepwalkers who injured themselves felt no pain and never woke up! And this goes WAY beyond bumping their head on something. One study subject jumped out of a third-floor window! Another fell off his roof and broke his leg! And neither knew what happened – or felt any pain – until they woke up. In the study, nearly half of all sleepwalkers reported injuring themselves while asleep – but only 10% woke up the moment they got hurt. Why is that? The researchers think sleepwalking switches off the neurons that send pain signals to the spinal cord and brain.