Tensai Japan

How much water should I drink a day?

The water you need to survive. Since 60 percent of your body is said to be water, how much water are you drinking every day and how much is safe for you?

Archive review copy. This draft translation and its health or nutrition claims still need editorial review.

About 60 percent of your body is water.We humans who lose our water from sweat and urine, but we must be rehydrated to prevent dehydration.



It is generally said that you recommend about 2L water, but there are some opinions that some health experts need to drink even though they're not thirsty.

How much water should I drink a day?
But what I want to focus on is the relationship between brain and energy and water.
Please make sure that the water supply is critical for your life.

Brain function is down.

They say that without rehydration, the brain, energy levels and brain function will be reduced.

Changes after exercise.

Studies directed at women show that body fluids drop by 1.36 percent after exercise. And then there was the body SOS signature. (1)
  • My mood and concentration are down.
  • Headaches increase.
While other studies show that moderate dehydration weight (one to three percent) caused by exercise or heat can damage many other aspects of brain function, we should also realize that mild dehydration can affect physical performance and reduce endurance. (2)(3)

Do you lose weight when you drink a lot of water?

Do you lose weight when you drink a lot of water?

There are many opinions that increased intake of water may increase metabolism, lower appetite and lose weight. According to two studies, drinking 500 ml of water temporarily increases metabolism by 24 to 30 percent.

Why do you drink water so much that it's metabolizing?

Not only is it estimated that drinking 2L water increases energy consumption by about 96 calories per day, but it also requires more calories for the body to increase body temperature, so it may be good to drink cold water.

Drinking water about half an hour before eating, especially when you're old, can also reduce your consumption of calories. (4)

Do you lose weight if you don't drink?

One study found that people who drank 500 ml of water before each meal lost 44 percent of their weight in 12 weeks, compared to those who didn't drink, and that drinking enough water, especially before eating, can have a significant loss of weight if you drink enough water, particularly in combination with healthy meals.

And there are many other health benefits to the proper amount of water taken.

Water and health precautions.

- constipation.
The increase in the intake of water is useful for constipation with so many problems. (5)

- Cancer.
Some studies show that people who drink more water have lower risk of bladder cancer and colon rectum cancer. (6)

- The kidney condensation.
If you increase your intake of water, the risk of kidney condensation may drop. (7)

It's a balanced food.

Water is not the only thing that improves the balance of water.

Fish, meat, eggs, and especially vegetables and fruits contain a lot of water, and together, foods rich in coffee, tea, and water help us to maintain our water balance, so I would like to stay well.

The thirst is a sign of my body.

Maintaining moisture is very important in life.

If you feel thirsty, remember that it's a sign from your body. When the total volume drops below a certain level, you start to dry your throat.

This is controlled by a mechanism similar to breathing and does not need to be conscious.

Do you ever forget to drink water when you're just absorbed in your work or your favorite thing?

It's about making sure that we're ready.

It's important to make water supplements in various situations, such as the seasons and the condition of the body at that time. Change of sweat and water supplements are not the same every day.

The most important is when your sweat is increasing. This involves exercise and heat, especially in dry climates.

If you're sweating a lot, please fill the lost water with water. An athlete with very long and vigorous exercise may need to supplement electrolyte with water.

How much water is best?

This isn't usually 2L. And I'm going to show you how to do that.

  1. If you're thirsty, drink.
  2. If you don't get thirsty, I'm done.
  3. During high fever and exercise, you drink enough to make up for lost water.
  4. That's it!
It's still hot, so let's honestly rehydrate ourselves.