Editor’s note: The podcast Chasing Life With Dr. Sanjay Gupta explores the medical science behind some of life’s mysteries big and small. You can listen to episodes here . ( CNN) — Puberty: It’s one of the most important milestones in a young person’s life. It’s also one of the most awkward. Hormonal shifts lead to massive changes in body and mind, including growth spurts beyond just height, hair growth beyond just the head, mood swings beyond just tantrums and, for most, a sexual awakening.