In this episode of Beauty Bytes with Dr. Kay: Secrets of a Plastic Surgeon , Dr. Kay Durairaj talks with sleep medicine specialist Dr. Andrea Matsumura about the deep connection between sleep and overall health. They discuss the effects of sleep deprivation , the role of melatonin in regulating our circadian rhythm, and how caffeine disrupts restorative sleep . Dr. Matsumura also explains the science behind sleep apnea , the history of the CPAP machine , and how proper sleep impacts more than you think!