If you’re a new mom, no doubt you’re wondering when and how (or if!) your belly will be flat again. Is it crunch time? No! It turns out that crunches can be harmful to both your belly and your back. To understand why, here’s an overview of how abdominals work: Abdominals 101 We have three layers of abdominals: * The Rectus Abdominis This outer muscle supports your back and organs. During pregnancy the rectu ...