The mouth is the baby's main instrument for knowing the world. It discriminates consistency, volume, textures of objects, people and even the body parts of the baby. He still doesn't put his foot in his mouth, but his hands are savored along with soft toys he can already pick up. Reflex movements continue to decrease. Gait, for example, is replaced by your child's voluntary attempt to stand on both legs when standing up. The spine is upright. At the end of the third month, the baby can lift his head, torso, reach out and move his head for objects and sounds. The sleep pattern changes. The child sleeps 16 hours a day. It is still plenty and there is a reason. "The baby needs all this sleep so as not to consume more calories than necessary, as his metabolism works madly," says Lembo. And when sleeping, the baby controls its development. It alternates deep sleep and REM sleep (when the eyes move). It is known that it is in REM that adults dream. You can't tell if babies do the same, but it's at this stage of sleep that your brain cells form new synapses. The baby's brain activity at such times is so intense that sometimes the baby goes through a kind of blackout, so much information is recorded. In activity, the baby's movements advance. He begins to turn the little body to the side. It has a sense of depth since birth, but not danger, which is something to be learned. So beware of the falls. From the third to the fourth month appear the cooing or babbling. "When parents talk to their children, they respond with sounds and intonation as if they were having a dialogue," says pediatrician Rosa.al do bebê nesses momentos é tão intensa que, às vezes, ele sofre uma espécie de blecaute, tamanha a quantidade de informações que são registradas. Em atividade, os movimentos do bebê avançam. Ele começa a virar o corpinho para o lado. Já tem noção de profundidade desde que nasce, mas não de perigo, que é algo a ser aprendido. Por isso, cuidado com as quedas. Do terceiro para o quarto mês aparecem os arrulhos ou balbucios. "Quando os pais conversam com os filhos, eles respondem com sons e entonação como se estivessem mantendo um diálogo", diz a pediatra Rosa.
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