Why You Get Dizzy Standing Up Explained

Ever stand up fast and suddenly feel dizzy like your vision dims or you see

stars? That moment is your blood pressure playing catch-up. When you stand,

gravity pulls blood toward your legs. For a moment, less blood returns to your heart.

With less blood returning, the next heartbeat may push out less blood than

usual. That can briefly lower blood pressure meaning less oxygen-rich blood reaches your

brain for a few seconds. Your body has an automatic fix: sensors in big

arteries notice the drop and trigger a fast response. The response is: heart rate increases

a bit, and blood vessels tighten pushing blood back up. When that response