Congratulations to Doreen, who has won our Day 7 contest by telling us what part of the Boot Camp Workout she finds most challenging. Doreen says: "I would love to win this and have something to refer to at home. For myself…the hardest part is all of it. The body is use to lazing." Doreen has won a copy of Maureen Hagan's new book, 6 Weeks to a New Body. Check out the Week Five Boot Camp Workout video. (Can you believe we're already in Week Five?!) This week's video features seven sensational conditioning moves, including single leg dip squats, walking lunges, the superman lift, high knee lifts, pushups and ab hundreds. All of it is challenging. But, boy, do you feel great when it's all over!