Jillian Michaels strips for the new issue of Shape, showing off her ridiculously fit body. Inside the magazine, the Biggest Loser trainer, 40, dishes that she is now more confident than ever. “When I think back on my twenties and thirties, I look better now than I ever have," she says. "Yes, I’m older but I’m also wiser and that’s a more intrinsic type of beauty." The mother of two also dishes that she works out more for them than she does for herself. "My best reason for having strong arms is because I love to pick up my kids," she explains.