After birth, water is the most natural environment for babies. Swimming provides the mobility and strength necessary for living and hardens their body. A newborn becomes adapted to water more quickly than babies who are several months old. The reflex of babies to hold their breath is preserved until the 3-6 month; after that, it has to be taught to them again. Swimming has a calming effect on your baby and relaxes his or her small muscles, it gives a lot of pleasant emotions and makes further swimming much easier.