Sleep is naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is observed in all mammals, all birds, and many reptiles, amphibians, and fish. Sleep is often thought to help conserve energy. Aims & objective: To find out the correlation of sleep duration with BMI and arterial blood pressure of Medical Students. Material and method: Cross-sectional study was done on 150 medical students of Dr. S.N. Medical College, Jodhpur. Medical students both boys and girls were selected and interviewed for the duration of sleep at night and average duration of sleep per week since last six months was determined. Data regarding age, sex, height, weight and arterial blood pressure per standard methods. Results: In the present study Observation shows decrease in sleep duration increase in blood pressure values in both boys and girls and did not found any association between sleep duration and BMI.