During exercise, to prevent dehydration, fluid intake should be increased to 5-6 times the norm. Well, oestrogen is a female hormone, and in it's natural form it is harmless. But it can be chemically produced, and this creates a harmful substance that is not bio-degradable. Dead Sea salt baths have also been found to improve skin complaints such as Psoriasis. Soaking in warm mineral salt baths is also said to soothe rheumatic and arthritic pains.
Water controls the body's temperature.
It carries nutrients and gases around the body. It transports waste products out of the body. It lubricates joints. It helps alleviate toxins through lymphatic drainage. It has a lot of functions - so we must need quite a lot.