In this episode Lewis First, MD, MS, FAAP, editor-in-chief of Pediatrics, is back for a holiday edition of “First Up.” He offers a bird’s-eye view of what’s in the December issue of the journal. Hosts David Hill, MD, FAAP, and Joanna Parga-Belinkie, MD, FAAP, also talk with Trish Hutchison, MD, FAAP, about puberty and ways to help children and teens prepare for their changing bodies. For resources go to aap.org/podcast.