The average adult human is between 55-60% water. Babies are on average 75% water when they are born.
Water helps cushion and lubricate joints, regulate temperature and nourish the brain and spinal cord. It plays a very important role in the well-being of our mental and physical health.
When you are dehydrated, your brain must work harder to produce the same output you would normally be able to do when you are well hydrated.
On a normal day-to-day basis a person’s water intake depends largely on the weight of the person. It’s recommended that men drink between 2.5-3.7 liters of water per day and women drink about 2 - 2.7 liters per day for women.