Be aware of external factors. The lightheaded effect will be more intense if you’re hungry or dehydrated, or if the air is hot and humid. If you get too lightheaded, you might faint or vomit. Consider standing on your head or performing a handstand. Turning yourself upside-down is a very quick way to bring blood to your head. The process is essentially the same: stay upside-down for a minute or two until your head is heavy – then stand. Make sure that you have plenty of neck support.
The heavier and faster you breathe, the higher your heart rate will go. This will cause your blood flow to quicken.
Your vision may go dark. You may see spots, “stars”, or bright points of light dancing before your eyes. You should feel an overwhelming head rush.
Do not seal your head inside an airtight container, like a bag or a plastic wrap. Certainly don’t plug your nose and your mouth at the same time. You run a high risk of suffocating. Do not try to make yourself lightheaded underwater. If you pass out underwater, you might not be able to bring yourself to the surface – and you might drown. Do not try to make yourself lightheaded while you’re doing anything that requires your full attention. Don’t do this while riding a bike or driving a car. Don’t do this while standing on the edge of a high place. You might crash; you might fall.
