Temperatures may be dropping, but that doesn't mean it's time to abandon the bikini bod you worked so hard for this Summer. Besides, you never know when a tropical vacation may come your way! Cue Jeanette Jenkins, president of The Hollywood Trainer, where she's worked with heavyweights like Alicia Keys, Pink, and Kelly Rowland. In this 10-minute, total-body bikini boot camp, Jeanette will have your heart rate up and muscles burning. Grab a pair of three- to five-pound weights and get ready to work!