Dehydration

Your body is made up of water to a degree of 55% to 78%. Water makes up roughly 78% of newborn babies, 65% of babies aged one year, 60% of adult men, and 55% of adult women. 73% of your heart and 73% of your brain are composed of water. Your skin is 64% water, your muscles and kidneys are 79% water, and your bones are 31% water. Your lungs contain an astounding 83% water.

Dehydration, or not having enough water in your body to properly hydrate your cells and blood vessels, is another summertime danger. Even a tiny amount of water loss, as little as 1.5%, can result in symptoms. Thirst is your body's natural reaction to dehydration. When you feel thirsty, you should consume some liquids immediately away, especially water.