How do people bounce their butt cheeks up down? Together or separately?

[u/Affectionate-Newt889]

Serious question. Any time I see a *music* video where someone shakes their butt, I am just mind boggled. How do you move your butt up and down without moving your hips? And...especially people who can do it by individual cheeks. That and Terry Crew pec flickering thing just stump me. How can one learn to master this art?

[u/Articulationized]

Gluteus muscles, like a lot of muscles, can be consciously controlled. The brain sends a signal to the muscle to contract, so the muscle contracts.