Our bodies have been shaped and formed by water - we have an ocean inside us. Like the Earth, we are 70% saltwater. In 1897 French physician Rene Quinton discovered a 98% match between our blood plasma and sea water, or what we called ‘ocean plasma’. Like our mammalian cousins, dolphins and seals, we too have evolutionary aquatic markers. Take for example our brains - simply looking at water changes our brain wave frequency, putting us in a more meditative state. Consider our nervous and endocrine system - cold water stimulates the vagus nerve, calming our fight or flight response, lowering cortisol and releasing feel-good hormones.