Hi Uzma! The way I see it is that if you increase the intensity level, you will have to work harder and therefore burn more calories. As long as you’re expending more calories than you are eating, you will lose weight! Fortunately, we don’t have enough testosterone to ‘muscle’ up! The muscle will replace fat tissues and therefore give you a more toned appearance. It will also increase your metabolism and daily calorie burn! Hope that helps.