See Photos From the World's First International Day of Yoga

Indian Prime Minister Narendra Modi sits on a mat as he performs yoga along with thousands of Indians on Rajpath, a boulevard in New Delhi, June 21, 2015.

Thousands of participants perform yoga on Rajpath, a boulevard in New Delhi, on June 21, 2015.

Thousands of participants perform yoga yoga to mark the international Day of Yoga, at Rajpath, a boulevard in New Delhi, on June 21, 2015.

An Indian girl, left, displays a picture of Prime Minister Narendra Modi painted on her face as another sports the logo of International Yoga Day in Bangalore, India, on June 21, 2015.

Afghan students perform yoga during the first International Yoga Day, at a private school in Kabul, on June 21, 2015.

Hundreds of people attend a yoga session under the Eiffel Tower in Paris, on June 21, 2015, in a mass yoga session to mark the first International Yoga Day.

A woman wearing a mask takes part in the International Yoga Day event in Seoul, South Korea, on June 21, 2015.

Participants attend the Yoga Fest to mark the International Day of Yoga at the Medeo skating rink in Almaty, Kazakhstan, on June 21, 2015.

Chinese students from Geely University take part in a yoga workshop marking the International Day of Yoga at an event in Beijing sponsored by the Government of India on June 21, 2015.

People practice yoga in Times Square as part of a Summer Solstice celebration on International Yoga Day in New York, on June 21, 2015.