Water is a solvent. It dissolves other substances and carries nutrients and
other material (such as blood cells) around the body, making it possible for
every organ to do its job. You need water to
- Digest food, dissolving nutrients so that they can pass through the intestinal cell walls into your bloodstream, and move food along throughyour intestinal tract
- Carry waste products out of your body
- Provide a medium in which biochemical reactions such as metabolism (digesting food, producing energy, and building tissue) occur
- Send electrical messages between cells so that your muscles can move, your eyes can see, your brain can think, and so on
- Regulate body temperature — cooling your body with moisture (perspiration) that evaporates on your skin
- Lubricate your moving parts
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