Shake and shimmy your way to a healthier body all week long with this exciting five-day workout system led by world champion dancer and fitness expert Lisa Nunziella. On Monday, you'll learn to salsa; on Tuesday, you'll learn the cha-cha. And by Friday, you'll have learned how to do the meringue, the samba and the rumba, too. (We bet you'll be having so much fun that you forget you're exercising!)