Water

Short title for this section, but Water is quite important for your body. Nearly all of the systems in your body require water...

How much water should a person drink per day: https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/water/art-20044256

So how do you know if you are drinking enough water, watch this

https://www.youtube.com/watch?v=KahsIEbFROI

As discussed in the video, looking at your urine is a good test to see if your body has enough water.