In this video, you will learn how to do a dead bug variation with dumbbells by Dr. Brian Damhoff.
1. Start flat on your back with your knees bent at a 90 degree angle
2. Keep your back firmly pressed into the ground the entire time
3. Then you can do any combination of arm overhead or leg towards ground
You will feel how different combinations work the core differently. As long as your back stays firmly pressed into the ground, you can do any variation you want.