If someone presses the artery in your neck too hard, your body might think the blood pressure is high and slow your heart so your brain gets less blood for a little while, which can make you faint.
A child-friendly, one-sentence explanation of how pressing the artery in the neck can make the heart slow and briefly reduce blood to the brain, causing fainting in a 5-year-old.
If someone presses the artery in your neck too hard, your body might think the blood pressure is high and slow your heart so your brain gets less blood for a little while, which can make you faint.