- Hot flashes, cold sweat
- Dizziness, tunnel or white-out vision
- Ringing ears
- Nausea or vomiting
- Rare seizure-like twitching or full blackout
This is usually a vasovagal response-- a common type of fainting caused by a sudden drop in blood pressure and heart rate. Your nervous system overreacts triggering an anxiety driven physical response, often caused by:
- Not eating beforehand
- Dehydration
- Poor diet/ Consuming energy drinks (Red Bull, Celsius) and processed food/sugar in excess.
- Stress/anxiety
- Pain
- Heat
- Lack of sleep