"First of all, water, in survival, you have to find water at all times in the first place, unless you can drink water that is so clean that it won't make you dysentery." "A fact, under the extreme conditions of the human body, without food, people can survive for several weeks, and without water, they can only survive for a few days, it is conceivable that the importance of water in the process of survival, many people are lost in the wilderness, jungles, deserts, lack of water or drinking unclean water caused by the highest mortality rate, secondly, lack of food, attacked by poisonous snakes and beasts, bites of poisonous insects, sickness, injury and infection, accidents and so on."

Chen Dong walked to the beach. "This small island is in the tropics, the weather is hot, I am walking on the beach now, the hot sun is shining directly on me, it is so hot that I sweat all over, I am rapidly losing the precious bodily fluids in my body, and the sea breeze blowing from the northwest direction is blowing on me, accelerating the loss of bodily fluids in my body. So, the first thing I do now is to get out of this beach, hide under the shady trees on the island, and then, looking for water, in fact, I already feel thirsty, my mouth is very dry, my head is a little dizzy, and my body has a feeling of weakness, which is a clear symptom of dehydration.

A little knowledge, the human body, the blood, digestive juices, tissue fluids, intracellular fluids, saliva, urine, etc. are all composed of water, and the human body's vital activities, such as metabolism, digestion, absorption, recycling, and excretion, all require the participation of water, and these life activities cannot be carried out without water. Chen Dong said. In the process of survival, you have to measure, measure the risk, measure the payout and the return, the reward is greater than the time you pay, the risk you pay, and the precious body fluids consumed, the calories burned, you are worth doing, otherwise, the gains outweigh the losses, which is very important in the process of survival. “

Chen Dong left the beach and walked into the jungle of the island.

The jungle was very dense, blocking the sun, and Chen Dong felt a little cool.

"I need to survive on this desert island for 60 days, show you how to survive in this extremely harsh environment, teach you some very practical survival skills, and prove to everyone that I can survive on this desert island for a long time, like Robinson, which is why this show is called 'Robinson at Sea'." "First of all, I want to investigate the topography of this island and 'count' the survival resources of this island, which is very important, because the resources on the island directly determine whether you can survive or not."

"It rained last night, which is good news, and it allowed me to find direct drinking rainwater in some places."

Chen Dong beckoned to the photographer and said, "Come and see, this leaf is the size of a palm, and the direct leaf veins bend the leaves, it rained yesterday, and the rain fell on the leaves, and the leaves store rainwater very well, and the rainwater is very safe water, so you can drink it with confidence." “

Chen Dong held the bottom of the leaf with his hand and opened his mouth to aim at the tip of the leaf.

The hand holding the bottom of the leaf was lifted up, and the rain flowed into Chen Dong's mouth. "It's about a dozen milliliters, which gives my body a little more water." "Our body consumes a lot of water every day through urine, skin sweating, and taking away some water when the lungs breathe air, etc., under normal circumstances, the human body consumes 1800 to 2000ml of water every day, that is, under normal circumstances, the human body needs to replenish about 2000ml of water every day in order to maintain the balance between body water consumption and supplementation.

However, in strenuous exercise, exposure to the sun, the human body sweats a lot, intense wheezing, and the water consumed every day is several times that of normal circumstances, correspondingly, it is also necessary to replenish the same amount of water as the water consumed by the human body, and if conditions permit, the body is replenished with appropriate salt and minerals, if the water consumed is not replenished in time, the body is dehydrated, the human body will have problems, dizziness, abnormal fatigue, and in severe cases, it will lead to fainting and death. "Survival is an opportunist, taking advantage of every opportunity to replenish water and calories at any time." "Now, I'm going to take advantage of this opportunity to drink a full water, I just picked up trash on the beach and picked up a 500ml plastic bottle, I'm going to fill the bottle."

Chen Dong searched for rainwater on the large leaves nearby, drank enough water, and filled plastic bottles.

"That's it! Let's go now, remember this place, this is my first well, after the rain, there is water here that I can't finish drinking, and it's not far from the coast. ”

Chen Dong spent four hours exploring the entire island.

The area of the island is about a dozen square kilometers, with dense vegetation, and there are several small islands near the small island, separated by a very shallow sea.

Of course, Chen Dong doesn't care about these.

Chen Dong is concerned about the resources found on the island.

Chen Dong said in the camera, "After the preliminary exploration of the island, I 'counted' the island's survival resources, fresh water, which I named the No. 1 well, the No. 2 well (the seepage of groundwater found on a rock wall on the island) two sources of fresh water, and what was even more surprising was that I found coconut trees on the island." A coconut is about two glasses of water, containing two tablespoons of sugar, as well as proteins, fats, vitamin C, and minerals such as calcium, phosphorus, iron, potassium, magnesium, and sodium.

It is a large amount of water and sugar, which is the main source of energy needed to sustain life activities.

The two most important elements of survival in the wild, water and energy, are supplemented.

In fact, coconut was and even now is not only used as a substitute for glucose water for infusion, saving many patients, but also coconut water is very similar to human plasma, and is also used as a substitute for plasma as an infusion in many countries.

During World War II, coconut water was often used as a plasma substitute for the wounded because it did not harm red blood cells and was acceptable to the body.

To this day, it can also be used as an intravenous solution in field rescue, in emergencies such as cholera and dysentery infections. “

"The problem with water is solved."

"Next, 'count' my food, there are a lot of big crabs on the island, big fists, and a herd of wild goats, I have witnessed at least 6 of them, in the sea, producing 'delicious seafood', oysters, moray eels, sea cucumbers, sea urchins, shells, etc., as long as you have the ability, if necessary, I can go to the island on the other side of the island to find resources."