Calling on all of India to support his agitation against black money and graft, Ramdev said: "India could have won gold if there was a competition for corruption in the Olympics.
The crowds, which had started gathering since 8 a.m., cheered and clapped enthusiastically. To which Ramdev said: "This is not a matter to applaud."
He started the day with a yoga camp, before addressing the crowd in a speech that pitched for his movement against black money as well as for a stringent Lokpal bill, an independent Central Bureau of Investigation (CBI) and a citizen's charter - also the demands of the now disbanded Team Anna.
"If the CBI is made independent, politics will become clean, because CBI is being used to blackmail opposition leaders," he said, echoing Team Anna leaders.
The three-day symbolic fast started Thursday. Organisers are expecting more crowds over the extended three-day weekend.