A begin from beguns.

As in embryo all are developing is defines for a next person s life, as for an embryo supply a needing substances ,as a water are depending for starting possibles are for a future baby, as since early pregnancy stage you must to help for baby to restore a water supply,as morning sickness or vomiting are asking for water for embryo needing.
A baby could not share about are feels, but losing moisturizing by organism will a dead for his a reason as of hot, or tight wrapping, as of dehydration fighting are bronchial narrowing as small ends of bronchus, and still risk of factor as artificial feeding of cow milk, as he having more fats and proteins ,than of mother .As exchanging system in a baby is needing fighting with high load, as in damage  for an other organism functions. As in result a whole failure in water and narrowing bronchi's,and here is enough to give for baby a water after breast feeding.And feeding breast time ending,person grows till 25 y.old,and cells are dividing and every needing in water filling.