Question: what are the three main functions of water in the human body?
Answer: What's the big deal? ...  It helps create saliva. ...  It regulates your body temperature. ...  It protects your tissues, spinal cord, and joints. ...  It helps excrete waste through perspiration, urination, and defecation. ...  It helps maximize physical performance. ...  It helps prevent constipation. ...  It aids in digestion.