Because water is needed to form minerals, we learned that water is the major ingredient of most body parts. For example, the brain and heart are composed of 73% water, and the lungs exceed that amount to 83%. Here is a summary of the benefits of water in the body from the USGS water Science School:

The creation of the man’s body is a summary of God’s wisdom in its complexity. It overwhelms the mind of every man when he applies himself to the study of it. We are intrinsically woven and perfectly formed by the hands of our God, our Creator.
God created man in His own image, in the image and likeness of God He created him; male and female He created them (Gen. 1:27). Things were beautiful without the presence of sin in the garden, when man conversed with God, as He would come down in the cool of the day, and God was pleased with what He had created.
Even though, clay and water are the two components that form the physical body of man, man is more than that. He has a soul and he has a spirit. The soul of man is like a mirror reflecting his emotions, will and intellect. He expresses sentiment of emotions- happy or sad, anger, joy; he expresses desires and he reasons with his intellect. It is with his soul that he rejects YAHSHUA. So, he is responsible for his spiritual destiny. When God created man, He created him with a purpose in mind- for His glory. Man needed life to express his soul in these three expressions: emotion, will, and intellect. God then breathed into his nostrils the breath of spirit of life. (Gen. 2:7b) and gave him a soul. While yet in the garden, he talked and fellowshipped with God. It is with his spirit that man communicates with God, and it is with the soul that man communicates with the flesh- clay. The soul is contrary to the spirit, since it is connected with the natural part of man. When man is born again there will be a constant war within him as Paul so expressed: for I fail to practice the good deeds I desire to do, but the evil deeds that I do not desire to do are what I am doing. Now if I do what I do not desire to do, it is no longer I doing it, but the sin which dwells within me.
So I find it to be a law that when I want to do what is right and good, evil is ever present with me and I am subject to its insistent demands (Rom. 7: 19-21). In the physical, the will of the mind is always contrary to God’s will and law. It will be only when God breathes His Spirit in man, reviving the spirit of man, that his spirit will be victorious over the desires of the soul-the flesh, because the mind of the flesh is hostile to God, for it does not submit itself to God’s law; indeed it cannot (Rom. 8:7). The soul of man became an enemy of God when man decided willfully to disobey Him.
When YAHSHUA met a blind man from birth, He performed an act that reflected the original creation of man: He spat on the ground and made clay with His saliva, and He spread it on the man’s eyes (John 9:6). YAHSHUA’S saliva contained His own DNA. The DNA of life He created Adam with. There is much said about the saliva’s healing properties concerning the eyes. But we all know that YAHSHUA did not need to follow the customs of His days on earth to perform miracles, for He had and has all power of healing through His word without anything added to it. He had formed man out of the ground and with the ground mingled with His saliva He was going to heal this blind man. That blind man was chosen before his birth, in fact, even before then, so that his life would display the glory of God. He was born not seeing the light of the day; the beauty of nature and for forty years, a significant number, revealing the nation of Israel’s wandering through the desert to the Promised Land. For the most part, they were blind to the miracles God had performed and continued murmuring against Him. YAHSHUA, after spreading the clay made from His saliva on the blind man’s eyes, sent him to wash in the pool of Siloam- which means Sent (John 9: 7a). These were waters that Israel had refused and despised. These waters were symbolic of God’s protection and sustaining power (Isaiah 8:7a). The blind man’s eyes, representing the spiritual condition of the nation of Israel, were to be washed clean in that fountain called Sent that had been rejected for many years. There, stood the Sent One –the healer directing the blind man on how to receive his eyes sight. “Unless the man is born of water and the Spirit he cannot enter the kingdom of God; what is born of the flesh is flesh; and what is born of the Spirit is spirit” (John 3:6-7). No one can see God, or enter His kingdom in his natural body, governed by his un-regenerated soul. As YAHSHUA have said, What is flesh is flesh; what is Spirit is spirit. The waters of Siloam represent the Holy Spirit; we must be born of Him.
Man was wonderfully created, but the influence of sin corrupted his body and his soul. It has made him sick and crippled. YAHSHUA offers us an alternative, for which He came and paid the price in full. The fountain of Siloam stands ready where we can be clean. The blind man needed to have his eyes washed from that old clay- his old-self, to receive YAHSHUA – the fountain of life. His eye-sight would have not been restored if he had not washed them in the waters of Siloam, as YAHSHUA commanded him to remove the old things, to receive the things which were made new. The new covenant of YAHSHUA’S blood was about to be shed calling Israel to accept His gift to be saved.
The body of a believer is a temple consecrated to the Lord. It is a home for His Holy Spirit. Therefore, let us be holy, as He is holy!