At this point, {{ PRONOUN_BABY }} is testing out all of {{ PRONOUN_HIS_HER_LOWER }} new parts and will practice swallowing, sucking, hiccuping, and yawning. As {{ PRONOUN_BABY }} uses new facial muscles, a tiny smile escapes, shown here by the creases around the mouth and the highlight on the cheek.
![](https://assets.oviahealth.com/wp-content/uploads/2023/12/article_109201_week-15_s_640_533.jpg)