What Happens When You Faint?

The video explains the phenomenon of fainting, particularly vasovagal syncope, which occurs when the vagus nerve overreacts to stress, causing a drop in heart rate and blood pressure, leading to a temporary loss of consciousness. It describes the body's fight or flight response and how the vagus nerve helps recalibrate the body after stress. The video also highlights the role of oxygen and blood flow in maintaining consciousness.

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