Drinking water is a safe, easy, and effective way to prevent fainting.
Within three minutes of drinking several cups of water (12 mL per kg of body weight), levels of the adrenal hormone noradrenaline in the bloodstream can increase by 60%. As you can see in the graph below, for 0: 19 of my video “The Effects of Drinking Water on Adrenal Hormones”.
When there were researchers drink Drinking 2 cups (500 mL) of water with electrodes attached to your feet has been documented to increase bursts of fight-or-flight nerve activity by about 40 percent within 20 minutes (see graph below and my video below). :25). video.
Drinking a few cups of water (11 mL per kilogram of body weight) narrows blood flow to your arms and calves, and arteries to your limbs and skin constrict to direct blood to your core, cutting blood flow by almost half. It will be narrowed down. , as seen in the graph below and at 0:42 of my video. That’s why drinking water can be a safe, easy, and effective way to prevent fainting, known medically as syncope.
Syncope is “a sudden, brief loss of consciousness caused by a decrease in cerebral blood flow, or the brain.” About 1 in 5 people will experience this at least once, and about 1 in 10 will experience it repeatedly. It causes millions of emergency department visits and hospitalizations each year. Fainting can sometimes be caused by heart problems, but is most often caused by standing for long periods of time (because blood pools in the legs) or strong emotions, which can cause your blood pressure to bottom out.
Approximately 1 in 25 people have So-called blood-damaged injection phobia, in which, for example, a person may faint when a needle is inserted into them. Over 150,000 people experience They go into a fainting or near-fainting state when donating blood every year. To avoid feeling light-headed, try drinking 2 cups (500 mL) of water 5 minutes before the needle is inserted. The secret is not to increase the overall blood volume. If you drink Two cups of water or even one quart (500 to 1,000 mL) of water only changes blood volume by 1 to 2 percent. Rather, it is due to a change in the distribution of blood to the center. caused As you can see in the graph below and at 1:56 in my video, this is due to noradrenaline-induced peripheral artery constriction. video.
Drinking water stimulates the release of norepinephrine as much as drinking a few cups of coffee or smoking a few unfiltered cigarettes. If the simple act of drinking water can trigger such a severe fight-or-flight response, why doesn’t it also cause your heart to race and your blood pressure to skyrocket? It’s like a reflex. When we drink water, our body simultaneously sends a signal to the heart to slow down and “quiet the heartbeat.” You can try it at home. Measure your heart rate before and after drinking 2 cups (500 mL) of water. Within 10 minutes, your heart rate slows down by about 4 beats per minute. You should be down 6-7 beats by the 15 minute mark, as seen in the graph below and at 2:42 in my video.
One way scientists figured this out was by studying heart transplant patients. When transferring a heart from one person to another, all attached nerves must be severed. Amazingly, some of the nerves grow back. But still, when you give a healed heart transplant patient two glasses of water, their blood pressure increases by 29 points. The body cannot adequately counteract the effects of a noradrenaline burst. Some people develop a condition known as dysautonomia. In this condition, the blood pressure-regulating nerves don’t work properly, and drinking about 2 cups (480 mL) of water can dangerously spike your blood pressure by more than 100 points. It’s about how the simple act of drinking water can have such a powerful effect. The only reason this doesn’t happen to all of us is because we have an even stronger counter-reaction to suppress our minds. (This reminds me of the woman who had a stroke after taking the ice bucket challenge because her diving reflex was strong enough to suppress all the extra noradrenaline release.)
This amazing water effect can help people who suffer from milder autonomic disorders, such as orthostatic hypotension, which causes dizziness after suddenly standing up. Drinking water before you get out of bed in the morning can be a big help. So, what about promoting metabolism? If a large amount of norepinephrine is released and adrenal hormones are secreted in excess, will drinking a few glasses of water promote the burning of body fat? Is tap water safe for ephedra? , and you’ll lose a lot of weight, but in return your heart rate will drop significantly? Researchers decided to test it. This is explained next.
If you missed the previous video, check out How to Get the Weight Loss Benefits of Ephedra Without the Risks.
Stay tuned for What are the safest metabolic boosters? Friday Favorite: Optimize your water intake to lose weight.
What kind of water is good? Find out if it’s best to drink tap water, filtered water, or bottled water?.
