I always feel like I get horrible headaches when I don't drink enough water, but now there's proof it's not all in my head. In a new video released by TED-Ed Original lessons, educator Mia Nacamulli explains why we need so much water to stay healthy and what happens when we don't get enough.
As explained in the video, the human body is made up of about 60 percent water, which means we need to keep replenishing ourselves all day, every day if we want to keep our organs functioning. If you didn't drink water, your body wouldn't be able to lubricate your joints, regulate your body temperature or nourish your brain and spinal cord.
For example, a dehydrated brain has to work extra hard to process simple tasks. So, if you're having a hard time focusing on that term paper or the plot details of "The Walking Dead," you might be surprised to find how much a glass of water helps.
But how much are we expected to drink if we want to stay in tip-top shape? For most men, that means between 2.5 and 3.7 liters a day; meanwhile, women should aim for 2 to 2.7 liters a day. As always, make sure to listen to your body because drinking too much water can be a rare, but dangerous health hazard, too.
Watch the video above for the full explanation of why water is freaking great for you.