This is startling reflex which is common in babies. Nothing to worry!

Mostly babies do it because babies are in a small space in the womb and are used to the fetal position . . On the outside there's a lot of space . .they are still getting used to being on the outside

It's common behavior for babies . . Swaddling the baby can help the baby sleep or simply gently patting your baby on the chest will do the <u>trick</u>

They do that often it's quite common. Do not worry.

And lifting up its just the response to a <u>stimuli</u>