There can be several reasons for this including craniosacral restrictions in the baby. There can also be tethered oral tissues (TOTs). Another name for tethered oral tissues are tongue ties, lip ties, or cheek ties. It is getting more popular to release the tethered tissue by laser or clipping. A good informational website to see if your child may need this exercise is www.kiddsteeth.com. Dr. Kotlow’s book SOS 4 Tots has great pictures and is worth checking out.