It is not uncommon during pregnancy for your abdominal muscles to separate due to the stretching of the abdominal wall to accommodate for the growth of the baby. This separation is often not noticeable until post-pregnancy when it seems as though "mommy tummy" just won't go away.
You've just got to your fitilates (Pilates) class and laid your mat on the floor, the class hasn't quite started yet so you stretch out on you mat and close your eyes to focus on your breathing. Deep breaths in through your nose, expanding the rib cage like a balloon and exhaling through pursed lips feeling the connection of the deep abdominals as you fully exhale.
The above scenario is a great example of how to warm yourself up mentally for the class ahead. You can choose to lie down, sit cross-legged or even stand up but bringing awareness to your breath is perfect. Often we need to shut out some of the world around us and closing our eyes is a great way to do that. But once class officially begins, in the world of Pilates, it's eyes open. Always.