Why Do Newborns Hiccup So Often? If your little one seems to hiccup all the time don’t worry, it’s usually completely normal! Newborn hiccups happen because your baby’s diaphragm (the muscle that helps with breathing) is still developing. Sometimes, feeding too fast, swallowing air, or even a sudden change in temperature can trigger hiccups. Most of the time, hiccups don’t bother babies at all they often sleep right through them! 😴 Here’s what you can do: 1. Keep your baby upright after feeding