Also question is, why is my baby grunting and stretching?
Newborn grunting is usually related to digestion. Your baby is simply getting used to mother's milk or formula. They may have gas or pressure in their stomach that makes them feel uncomfortable, and they haven't learned yet how to move things through.
One may also ask, does stretching mean baby is growing? As their muscles develop, their arms and legs start to move more freely, stretching out to make them seem taller and leaner. During their first 2 months, your baby is growing very quickly. They will keep growing at this rate, probably gaining about 900g and growing 2.5 cm to 3.8 cm every month.
One may also ask, why does my baby stretches a lot while sleeping?
While older children (and new parents) can snooze peacefully for hours, young babies squirm around and actually wake up a lot. That's because around half of their sleep time is spent in REM (rapid eye movement) mode — that light, active sleep during which babies move, dream and maybe wake with a whimper.
Is it good to stretch babies?
Straighten Up, Baby!
Your baby will uncurl naturally with time but you can help to strengthen their upper and lower back and stretch their chest and hips.