婴儿刚出生时哇哇大哭,是正常的生理活动。这不是因为他们感到不开心。而是他们正在大口大口地呼吸空气呢!当婴儿离开妈妈身体出生时.吸进的第一口空气会冲到喉部,猛烈地冲击声带.令声带震动.于是发出哭叫声。经过几声大哭.新生儿就建立起自己的呼吸。可以直接从大气中获取氧气了。新生儿啼哭不仅能够促进全身活动、肺部发育,扩大肺活量。而且也有利于将来说、唱肌肉组织的发育。 Baby crying at birth, is a normal physiological activity. This is not because they feel unhappy. Instead, they were breathing air! When the baby left her mother’s body, the first breath of air sucked into the larynx violently strikes the vocal cords and makes the vocal cords vibrate. After several more crying, the newborn builds her own breath. Oxygen can be taken directly from the atmosphere. Crying newborns can not only promote physical activity, lung development, expand lung capacity. But also conducive to the future, singing the development of muscle tissue.