Two billion people around the world practice yoga, fundamentally, “because it works” according to one leading guru from India.

Yoga is an ancient physical, mental and spiritual practice that originated in India and is now practiced in various forms around the world.

Jaggi Vasudev was due to lead a session at UN headquarters in New York on Tuesday, to celebrate International Day of Yoga, marked annually on 21 June.

He spoke to Priscilla Lecomte ahead of the session.

Duration: 5'37"