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
The 200 Rep Challenge
Need to shock your muscles into new growth? Need to make that personal trainer with the oversized head and youth-sized Under Armour shirt drop his favorite baby blue dumbbell on his toe? Then this killer workout is for you.
Pattern Overload - Part 1
When I first approached corrective and performance exercise specialist Paul Chek about writing for Testosterone, his first concern was whether I'd choose to soft-peddle his article. In other words, he was worried that I'd try to "dumb down" his material.
I, Bodybuilder
No hype, no exaggeration. How to build muscle as fast as humanly possible. Get the plan here.
Tip: 3 Ab Exercises NOT for Newbies
Build pro-level abdominal strength with these advanced moves.