Covid-19 second wave has shaken India. The situation goes bad in the second wave of COVID-19. More young people and children are getting infected, hospitals overrun. Aaj Tak talks with India's top doctors over the COVID wave. Dr. Naresh Trehan, Chairman of Medanta Medicity Hospital says Anuloma pranayama beneficial for COVID patients. People need to keep their lungs healthy. Watch the video to know more.