This former champion synchronized swimmer was thin and fit until she quit her sport and stopped working out altogether. "I never really learned how to exercise," Ali confesses. "When I gained that first 5 pounds, I thought I was so fat!" Back then, stretch pants and sweaters were in, so Ali wore them to hide her body. But they hid her soaring weight even from her!  By the time she reached her early 30s, she weighed well over 200 pounds- and climbing. This hairdresser from Arizona has gotten down to