Body & HealthHow it works
Why unconscious people belong on their side.
Someone unconscious but breathing can choke on vomit or their own tongue – protective reflexes fail. In the recovery position the mouth is the lowest point, fluid drains out and the airway stays open. Then: keep checking breathing, cover them, call 112. First-aid courses teach the sequence in minutes.
Useful: Only a breathing person goes into the recovery position – no breathing means chest compressions.
Source: en.wikipedia.org