Advocating support for the ancient Indian practice ahead of the International Day of Yoga, the World Health Organisation (WHO) said on Friday it brings attention to the need for physical exercise. "The day will rightly put the spotlight on physical exercise, much needed in today's world when sedentary lifestyle is becoming a leading cause of illness," Dr Poonam Khetrapal Singh, Regional Director, WHO South-East Asia, said in a statement. She said yoga fits in very well with the healthy lifestyle that WHO has been strongly advocating for, throughout the life cycle- from childhood to healthy ageing. See in photos Students practicing for International Yoga Day yoga at Delhi's India Gate.