Jugantar or Yugantar was one of the two main secret revolutionary trends operating in Bengal for Indian independence. This association, like Anushilan Samiti, started in the guise of a suburban health and fitness club while secretly nurturing revolutionaries. Several Jugantar members were arrested, hanged, or deported for life to the Cellular Jail in Andaman and many of them joined the Communist Consolidation in the Cellular Jail.

Anushilan Samiti was an Indian fitness club, which was actually used as an underground society for anti-British revolutionaries. In the first quarter of the 20th century it supported revolutionary violence as the means for ending British rule in India. The organisation arose from a conglomeration of local youth groups and gyms (akhara) in Bengal in 1902. It had two prominent, somewhat independent, arms in East and West Bengal, Dhaka Anushilan Samiti, and the Jugantar group.