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You probably know the feeling that you are hungry and want to eat something. When your mouth is dry, you want to quench your thirst. With hunger and thirst, your body shows you that it needs food and fluids. A person cannot survive without food and drink.

Why do people have to eat?

The body needs energy to play, think, work, and even sleep. The body gets this energy from the nutrients that the food contains. The most important nutrients are sugar and starch, fats and proteins, vitamins and minerals.

Why do people have to drink?

Water is also vital. Your body is made up of 70 percent water. Your cells, your brain, and your bloodstream all need lots of water. When breathing, sweating and using the toilet, the body excretes fluids. So it’s no wonder it’s important that you drink enough.