A person only needs 2 liters of water to bath, here is a video proving it.
There are 100's of reasons to save water, or to know the concepts in this Travel Tip. If you travel the world, you will run out of water, you will run out of water in the middle of a shower, you will often not have hot water. This travel tip paves the way for you to understand the essential management idea of water for showers.
I paid her to do this shower, but all the major concepts are in the video. This is one of them travel tips for those who do not pay attention, but wish they did later.