There is a large interest in development of non-invasive methods for activation of brown adipose tissue (BAT) due to its potential to combat obesity. Exercise is a non-pharmacological strategy to combat obesity by increasing EE. In this study we have investigated exercise induced BAT activation, heat and RER in sedentary and exercise groups. Our results show that exercise activates the brown fat with reduction in fat fraction, increased heat and RER. UCP1 expression shows that reduction in “white” like adipocytes in exercise group.