okay if you want to lose the weight around your hips you cant just do sit ups and crunches because those are only working one part of your body. like..what im trying to say is that you can do 1000 situps a day and it really wouldnt make a difference because you are building muscle but you cant see the muscle because there is a layer of fat covering it..soo if you want to lose weight around the stomach area then you have to do different kinds of excersises..swimming...running...sports..but you can also do sit ups and crunches..do you get what im saying?