Kmart's holiday commercial features five moms-to-be dancing and shaking their booties, all for holiday cheer! But you may be wondering: is it safe for a pregnant woman to be shaking like that?

Seeing a pregnant woman shake like that can be worrying.

But apparently, it's okay. And also a good thing too.

According to an OB-GYN at the Yale School of Medicine.

“To be honest, I’d actually be happy if all my patients could dance like this. Staying limber and fit is terrific for labor and delivery, and this doesn’t look dangerous at all. Hey, I let my patients ski as long as they are good at it,” says Dr. Mary Jane Minkin, M.D., FACOG.

Check out the commercial below: