models like hillary rhoda have taken to social media to show off workouts. and a breakfast recipe of flax seed and acai powder. and candice, showed the bruised knuckles following the preshow boxing workout. reporter: but the secret many of us want to know, how do those model moms get back on the runway so soon after giving birth? surprisingly the secret for some isn t found at the gym on a treadmill or even lifting weights. some angels are simply taking a leap of faith. mary helen bower, a former dancer with the new york city ballet, trains clients using a low impact ballet-based fitness regiment. she spent a year working with natalie portman for academy award winning role in black swan and recently got victoria s secret model lily