Your anterior core can never be strong enough. For the core-engaged dead bug, lie on your back with the hips and knees flexed to 90 degrees, and then pull a light band over your core/torso to engage the abs.
Exhale hard to get the ribs down, and think about "rolling" the pelvis back. Your back should be flat and pressed into the ground. From this position simply extend the hip and knee, focusing on keeping the back flat throughout.
related posts
Tip: Heavy Snatch Complex
This complex (a continuous series of exercises using the same weight) consists of a deadlift, a snatch, two overhead squats, and a snatch balance.
The Tao of Martin Rooney
Too often we get lost in the insignificant stuff. We need to step back and look at the big picture. What are we trying to do? Grow bigger muscles and become indestructible, of course.
Max Load Training in the Real World
Scott Abel says that maximum load isn't the same thing as maximum weight and he wonders why most people don't get this. How much you can lift isn't the deciding factor; the deciding factor is how much stress a muscle endures.
Specialized Training - One Bodypart at a Time
Is it better to increase the size of a single muscle group or spread muscle equally over the entire body?