these models are scheduled for photoshoots immediately after competitions. This is to ensure the model is in extreme shape after months of dieting, intense training (often times with the use of steroids and growth hormone), tanning, posing practice, using diuretics, and other photo-enhancing products and tricks.
Another misconception about many fitness models (including myself) is that we stay in this kind of shape all the time. That's not true. In fact, I wouldn't consider it healthy for anyone to stay in this kind of shape all the time. Stop believing the lies: It takes hard work, discipline, knowledge, genetics, and time -- end of story.
do not compare yourself with how someone else looks (never do that!). Let their physique motivate you, but focus on realistic goals for your body. Set your attention to one workout and one meal at a time to make today your best day ever, and you'll achieve your dream body.