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48. With the loss of more than 12-13% of water in the body, without medical intervention, a person can die.
49. Loss of 20% of liquid for a person is fatal.
50. Depending on the climatic conditions, a person can do without food for up to two weeks, but one cannot live without water for less than a week.
51. When digesting protein food, water is also used by humans, so in extreme situations, when there is no access to water, it is better to give up meat.
52. The body reacts to dehydration in the same way as it does to stress, that is, the body's reserves are mobilized, which causes real stress.
53. Mostly we need one and a half to two liters of water per day.

43. Surprisingly, our brain is also 90-95% water. As a rule, he will experience dehydration first, the symptoms are headache and mental exhaustion.
44. In the spine, water serves as a kind of shock absorber and ensures its flexibility and elasticity.
45. We will feel thirsty even if we lose 1% of water.
46. When we lose two percent, our physical and mental capacity decreases by 20%.
47. If water loss is close to 10%, visual and auditory hallucinations begin. The phenomenon of mirages in deserts is mainly explained by the loss of water.

26. When water freezes, it expands up to 9%, which often causes damage to pipes and containers where it is stored.
27. Cold water is absorbed by the sponge more than hot water.
28. Sound travels five times faster in water than in air.
29. It has been proven that when distilled water is heated in a microwave oven, there is a possibility of its explosion. This is due to the fact that distilled water can be heated above the boiling point.
30. Sea water freezes at a temperature of -1.91 ° C.