What's her secret? She's famed for taking to the Victoria's Secret catwalk, so it comes as no surprise that Miranda Kerr works hard for her model body. She praises the blood-type eating plan, devised by Peter D'Adamo. After reading his book she said: "It made a lot of sense to me so I started following the recommended eating plan and I just found I had so much more energy than I'd ever had; I was feeling really great". The plan is exactly as it sounds, tailoring your eating habits depending on your blood type. To coincide with her diet plan, Miranda practices yoga every single day. We're impressed.