what really happens when somebody passes out?

Question: what really happens when somebody passes out?
- Keywords:
  consciousness,
  health,
  human body
Asked by Imo on 15 Mar 2024.
- Christie Waddington answered on 15 Mar 2024:
  
  When someone faints (syncope), it’s usually because of a drop in blood pressure, which reduces blood flow and oxygen to the brain. Normally you regain consciousness pretty quickly. You can raise someones legs if they’re lying down to encourage blood flow to the brain if they’re feeling dizzy.