Please see clearly that there are other ways to replenish water, such as rice (rice needs water when it is cooked, that is, it needs a small amount of water when it is eaten).

As for "no water", I can't say for sure. It depends on your workload, temperature, other things you eat and so on. In an environment with suitable temperature and humidity, adults may survive for a week or more without drinking water.

There used to be a saying that ordinary people would face the threat of death as long as they didn't eat or drink for seven days and three days. At present, this statement may underestimate the ability of human beings to resist hunger and thirst. "Generally speaking, if people don't drink water, they may not be able to do it for a week, and if they don't eat for two weeks to a month, their lives may be in danger." Professor Lin Xiaoming said.

Linda Harvey, Ph.D. in Biology, British Food Research Institute, flatly denied the possibility that people who are absolutely hungry can survive for more than 40 days. He thinks that david brian, a British magician, has lived without food for so many days and is still just an ordinary magician (david brian set a hunger strike record of 44 days before Chen Jianmin).

But some scientists hold a completely different view. Dr Jeremy Powell Tucker, a human nutritionist at Bart Royal Hospital in London, is one of them. When david brian, an English hunger striker, resumed eating, he was his nutrition guide. Jeremy once estimated that a very fat person could live for several days without eating!

At first, Dr. Jeremy didn't support Brian's stunts and refused to participate. He said, "For ethical reasons, I can't encourage people to starve to death." When asked to guide Brian to resume eating, he readily accepted. After a thorough examination of Brian's physical condition (his blood content has been seriously reduced and his heart has shrunk), he said, "The trick is that there is no trick." The implication is that this hunger strike is not a magic show, but a real skill.

Chen Jianmin claimed that he practiced the ancient "Pigu" in China. Is hunger training really effective? "Training has a certain effect. How long can hunger training last under some special circumstances, such as the troops in a closed environment lacking food? This kind of research and training has certain practical significance. " Zhao Kesen said.

What is the ultimate time to fight hunger? This seems to remain a mystery.