text: I assume you're a girl cause of the pic. You have to do both. Cardio and weights go hand in hand. I don't know if you are over weight or if you are just skinny, or what. You will get more muscle, and definition when lifting, but if you are overweight, the fat will stay on top unless you incorporate cardio. Sorry. You should enjoy sweating. It's good for the skin, and it just feels good knowing that you worked out hard!\nTry a spin class or step!\nYou can always shower after!