Purpose: The present study has been designed to investigate the effects of 3 months training of Calisthenics Exercises on shoulder strength of the school boys. Calisthenics Exercises are designed to tone and strengthen muscle, and to promote general fitness. Design of the Study: Pre-posttest experimental design was used to in this study Methodology: For accomplish the study Only 30 boys students of rural area high school of Haryana state will be selected for the present study. 30 fresh students would be included in the Calisthenics exercises experimental group. Age group of the samples will be “12 to 14” years boys of high school. Selected Calisthenics exercises will be provided to Calisthenics experimental group only. The domain of the study will be delimited to rural high school boys of Haryana state. Experimental Group 'A' (12 to 14 years) (pre) v/s experimental Group 'A' (12 to 14 years) (post). Result: A significant effect of calisthenics exercises was observed on the vital capacity of rural school boys.