Conditioning our core doesn't mean we need to do 'hardcore' ab exercises. And for post-natal women, whose cores are compromised, it really should never be about starting there. Instead we need to learn how to re-connect with our core muscles - You can't strengthen a muscle your brain isn't talking to.
Beyoncé has appeared in public looking incredibly slim, and showing little sign of her recent pregnancy. She only gave birth to Blue Ivy Carter six weeks ago, and fake-bump rumours aside, she looks incredible!