Chandigarh: Saying yoga has become a major economic activity worldwide, Prime Minister Narendra Modi on Tuesday said it gives health benefits on "zero budget". Modi spoke while leading over 30,000 yoga enthusiasts at the Capitol Complex here to mark the second International Yoga Day. "There is no health insurance with zero budget but yoga gives health assurance on zero budget. For developing countries like India, a lot can be saved if we focus on preventive health care," he said. "Among all the methods of preventive care, yoga is cheap and available to all. Therefore it is important to make yoga a part of our lives." Modi said yoga was today connecting people. "Yoga is a big economic activity across the world, it is a profession," he said, while addressing people at the complex.