Bridge with marching.
Glutes, core, low back (it’s all core!).
The first part of the video demonstrates proper form with control.
The second part after the “slide” you will notice my hip drops when I lift a knee. When this happens it tells me that my client does not have tight control of her core.
She needs to do more training in a more stable position.
Check it out, test yourself and let me know what you come up with.
Are you surprised that you wobbled more than you thought you would? Were you solid?