"It unites individuals, families, society, country and the world", the Prime Minister said while leading the fourth International Yoga Day celebrations.
In Tokyo, around 80 people - mainly in their 60s and 70s - took part in a special yoga session organised through the Indian Embassy in the Zojoji Temple, the two-storey red shrine in the shadow of Tokyo Tower.
"In a world suffering from mental stress, yoga promises calm".
It is hard to say just how many people practise yoga around the world today, although some estimate it could be up to around 200 to 300 million.
Speaking at the state-level celebrations in Thiruvananthapuram, Vijayan, a CPM veteran, however lauded the greatness and benefits of yoga. "India is Yoga's top ambassador", says PM Modi.
Theresa Ugalahia, one of the few certified psychiatrists in Nigeria, said people are beginning to appreciate the benefits of the practice in the country.
"Yoga is India's strongest message to the world".
"It's a very edifying experience I would say for the kind of participation we're seeing this year". "Yoga is lovely because it is ancient yet modern, it is constant yet evolving", he said.
"When disintegrating forces gain prominence it is yoga that unites, creates amity in societies, which forms the basis of national unity and unity among nations, and finally leads to universal peace and brotherhood. We refuse the imposition to practise yoga and we will keep opposing its celebration in the state", said Vanlalruata, president of anti-corruption organisation-turned-political party, People's Representation for Identity and Status of Mizoram.
He added, "For example yesterday (Wednesday), we went to the Corniche and in front of the Ritz Carlton area we held a "yoga vistar", did some yoga postures in the Red Sea beach area with the iconic 300 meters King Fahd Fountain in the backdrop".
She said yoga is an important therapy for healing the soul, mind and body.
Since the proclamation, the International Day of Yoga has continued to grow in popularity as the profile of the practice continues to rise as more than just an exercise but as a great tool for staying healthy.
Today, people all over the world have come to look upon yoga as something which belongs to them, Mr. Modi said.
Troops guarding the world's highest battleground on the Siachen glacier, in the Ladakh region of Jammu and Kashmir, did yoga routines at an altitude of around 18,000 feet (5,486 m).