A few times a day, drink two glasses of cold water on an empty stomach to lose weight.
After drinking two cups (half a liter) of water, you can get an increase in the adrenal hormone norepinephrine in the bloodstream, as if you had just smoked some cigarettes or some cups of coffee, driving your metabolic rate up to 30 percent in one hour, as shown below and at 0:22 of my video Optimize water intake to lose weight. When tested in randomized controlled trials, that seemed accelerate weight loss by 44 percent, making drinking water the safest, easiest and most economical way to speed up your metabolism.
Now, this whole strategy can fail if you are taking a beta-blocker medication. (Beta blockers are usually prescribed for heart conditions or high blood pressure and tend to end with the letters ha ha hasuch as atenolol, nadolol or propranolol, sold as Tenormin, Corgard or Inderal, respectively). So for example, as you can see below and at 0:59 of my videoif you give people the beta-blocker medication metoprolol (sold as Lopressor) before drinking their two cups (480 ml) of watermetabolic increase is effectively prevented. This makes sense since the “betas” that are blocked by beta blockers are the betas. receivers triggered by norepinephrine. Otherwise drinking water should do the trick. But what is the best dose, type, temperature and time?
A single cup (240 ml) of water may be enough to Rev It raises norepinephrine nerves, but an additional benefit is seen when drinking two or more cups (480 ml). A note of caution: you should never drink more than about three cups (710 ml) in an hour, since that begins to get over the amount of fluid your kidneys can handle. If you have heart or kidney failure, your doctor may not want you to drink more water, but even with healthy kidneys, more than three glasses of water per hour can begin to critically dilute the electrolytes in your brain with potentially critical consequences. . (In How not to dietI’m talking about a devastating and heartbreaking experience I had in the hospital as an intern. One patient drank himself to death… with water. He suffered from a neurological condition that causes pathological thirst. I knew enough to order his fluids restricted and to close the sink, but it didn’t occur to me to close the toilet.)
Getting back to it. What type of water are we talking about? Does it have to be plain, running water? It shouldn’t matter, right? Isn’t water just water, whether flavored or sweetened in a diet drink? Actually, it does matter. When trying to prevent fainting before donating blood, drink something like juice doesn’t work as well as plain water. By trying to prevent people get dizzy when they stand up the water works but the same amount of water with salt added doesn’t as seen below and at 2:40 in my video. What is happening?
We used to think that the trigger was stomach distension. When we eat, our body diverts blood flow to our digestive tract, in part by releasing norepinephrine to draw blood from our extremities. This has been called the gastrovascular reflex. That’s why drinking water was thought to be a calorie-free way to stretch your stomach. But, on the other hand, if drink two cups (480 ml) of saline (basically salt water), the metabolic boost disappears, so stomach expansion cannot explain the effect of water.
Now we realize that our body seems detect osmolarity, the concentration of substances within a liquid. When liquids of different concentrations were covertly introduced into people’s stomachs through feeding tubes, the detection of plain water versus another liquid was demonstrated by monitoring sweat production, which is an indicator of the release of norepinephrine. Maybe be a spinal reflex, as preserved in quadriplegics, or selected It is increased by the liver, as we see less norepinephrine release in liver transplant patients (who have had their liver nerves cut). Whatever the path, our body knows it. Did you think we only had five senses? The current count is more than 33.
In my Daily Dozen recommendation, I rank certain teas among the healthiest drinks. After all, they have all the water in them with an antioxidant bonus. But, from a weight loss perspective, plain water may have advantages. that can explain studies that found that overweight and obese people randomly assigned to replace diet drinks with water lost significantly more weight. This was attributed to get get rid of all those artificial sweeteners, but instead it may be that the diet drinks were too concentrated to offer the same metabolic boost induced by water. As you can see below and at minute 4:29 in my videodiet soft drinks, such as tea, has approximately ten times the concentration of dissolved substances compared to tap water. Therefore, it may be best to drink plain water on an empty stomach.
Does water temperature matter? In a journal published by the American Society of Mechanical Engineers, an engineering professor proposed that the “secret” of a raw food diet to lose weight was the temperature at which the food was served. “Raw foods, by their very nature, are consumed at room temperature or below.” To bring two cups (480 ml) of room temperature water to body temperature, he calculated that the body would have to draw on its fat reserves and consume 6,000 calories. Just do the math, it says: A calorie is defined as the amount of energy needed to raise one gram of water one degree Celsius. So, given that two cups of water are approximately equal to 500 grams and the difference between room temperature and body temperature is about a dozen degrees Celsius, you need approximately 500 x 12 = 6000 calories.
Do you see the error? In nutrition, a “calorie” is actually a kilocaloriea thousand times larger than the same word used in the rest of the sciences. Confusing, right? Still, I’m surprised the article was published.
So, drink In reality, two cups of room temperature water need only 6 calories to heat up, not 6,000. Now if you were a hummingbird drink If you drink four times your body weight in cold nectar, you could burn up to 2 percent of your energy reserves by heating it, but it doesn’t make that much difference to us.
And what about really cold water? A letter called “The Ice Diet” published in it Annals of internal medicine He estimated that eating about a liter (a quart) of ice, like a gigantic snow cone without syrup, could rob our body of more than 150 calories, which is “the same amount of energy as the caloric expenditure of running 1 mile.” ”. However, it’s not that you burn fat directly to heat water. Your body simply corrals more residual heat than it normally gives off by restricting blood flow to the skin. How do you do that? Norepinephrine.
If you compare When drinking body temperature water, room temperature water, and cold water, there is only significant constriction in blood flow to the skin after room temperature water and cold water, as seen below and at 6:39 in my video.
What’s more, as you can see here and at 6:45 in the videoneither lukewarm nor lukewarm water could increase metabolic rate as much as cold water (refrigerator temperature). Our body ends up burning more calories when we drink cold water (at least indirectly).
Thus, two glasses of cold water on an empty stomach a few times a day. Does it matter when? Yes, watch my lecture on Evidence-Based Weight Loss to see how you can add the benefit of negative calorie preload by drinking that water right before meals.
Too good to be true? No. Check out my three other videos on water and weight loss in the related posts below.
