Did you know that you’re made of mostly water?

It’s true!

In fact, by weight, your body is approximately 60% water. 60%! More specifically, there are a bunch of body parts and systems that are mostly water. For example, your blood is mostly water. So are your brain, heart and lungs. Your muscles contain more than 70% water and your skin contains over 60%. You’re really very … watery!

But those percentages are different for everyone. Your body’s water content is really personal to you. Here are some variables. Your total body water percentage is affected by sex. Men have more total body water than women. Age is also a factor! Specifically, children have a greater total body water percentage than adults. Your climate can also change the amount of water in your body. In general, you’ll lose more water, sweat more, when the temperature goes up. Same with physical activity. When you’re more active, you sweat more. That’s another water loss.

You’re constantly losing water.

Over the ...