So now let's try isolating our whole belly. Keeping the knees bent, tailbone down as usual, chest lifted and make sure that your still breathing comfortably. So, you want to lift your rib-cage up but, still breathe. Roll the shoulders back, arms out. Your going to contract the whole belly in super tight as if your doing a sit-up.
So, everything's going to come in; the lower abs and the upper abs but, make sure your not rotating your hips under at all. So, your staying totally neutral and this is a purely muscular movement. Your spine remains neutral at all times. So contracting everything in, and now instead of releasing, your going to push with the same amount of strength you used to pull in.
So your going to imprint the whole belly out. And again, when your doing this, make sure your not crunching your lower back-tailbone stays neutral. And contracting in super-tight, pushing out. And in, and out. Let's try that with music; and in, out,in,out. And make sure your still breathing. And a little bit faster. And a teeny bit faster. That's how you isolate your belly.