Millions of people sleep every night but never truly rest. Their breathing stops without them knowing it. This is Sleep apnea. On NDTV Lifeline podcast, we decode sleep apnea. Why it happens, how it harms the body, and how timely treatment, including breathing support machines like CPAP and BiPAP, can be life changing, with Dr. Randeep Guleria- Chairman of the Institute of Internal Medicine & Respiratory and Sleep Medicine and Director of Medanta Medical School.