*Remember you should not do exercises lying on your back after the first trimester. BUT performing this test for 30 seconds will not harm your baby!
What can happen as a result of your expanding belly is rectus abdominis muscle can become separated from the connective tissue in between. It is not harmful, but it separates your rectus abdonimis muscles into a left and right side and the muscles can no longer contract effectively. If you have diastasis recti either during pregnancy or after pregnancy, generally you should not do the traditional Core exercises.
Generally, women don’t have this ab separation during the first trimester, but if you experience any discomfort in this area, you may want to modify the core exercises. You can find these modifications on Lindsay’s pregnancy DVDs. You should stay away from twisting motions, planks, quadruped positions, crunches and most traditional abdominal exercises. You will want to continue training the pelvic floor and transverse abdominis – these muscles act as a sling to support the baby and are extremely important in getting a flat stomach after the baby is born. You can activate the pelvic floor by controlling the flow of urine. And you can activate the transverse abdominis by placing a hand on our belly and forcefully saying the word “ha”.
8 Pregnancy Myths You Need to Know, Pregnancy Exercise Guidelines - the Do’s and Don’ts