Abstract: The purpose of the study was to find out the effects of yoga training aerobic training and detraining on muscular endurance among college boys. To achieve this purpose of the study, forty five college boys were selected as subjects who were studied various departments in the Nagaland University, Lumami. The selected subjects were aged between 18 to 21 years. The selected subjects were randomly divided into three groups of 15 subjects each group. Group one acted as experimental group I (yoga training) and group two acted as experimental group II (aerobic training) and group three acted as control group.