Jillian Michaels debunks popular weight loss myth Celebrity fitness trainer Jillian Michaels joins 'Fox & Friends' to discuss America's obesity problem. NEW You can now listen to Fox News articles! Cutting two simple things from her diet helped Melissa Joan Hart shed nearly 20 pounds, she revealed in a recent interview. The actress, best known for her roles in "Clarissa Explains It All" and "Sabrina the Teenage Witch," lost about 18 pounds after cutting sugar and alcohol as part of what she