Does anyone know where I can buy one thats not too expensive but  actually works ? Any of you mommas have experiences to share ? Feel free to leave a comment (: I've heard theyre bad but its not like ima use it all the time , I just want one after I give birth to help me get back to my pre pregnancy weight and then to help me loose 30 pounds since I let myself go and weighed 165 when I found out I was pregnant :/ i'd love to be at the 130's at least