Kate Hudson takes "Pilates day" very seriously.
The 37-year-old actress took to Instagram on Friday to show off her expert Pilates skills -- and let's just say, she's a little more advanced than we are.
WATCH: Oliver Hudson Hilariously Mocks Tabloid Romance Rumors Surrounding Sister Kate and Brad Pitt
"Pilates day ?#FableticsFriday @fabletics #BackDetail ?? @nicolestuartla," she captioned the impressive pic, capturing how she keeps her butt toned.
WATCH: Kate Hudson and James Corden Take Dance Lessons From Kids in Toddlerography
Hudson definitely hasn't been shy about her love for Pilates.
"I'll do Tracy Anderson, I'll do Body by Simone, I do everything," the actress told Self magazine last year, before adding that she absolutely swears by Pilates.
"Nothing, literally nothing, makes me feel like I'm back to my body more than pilates," she confessed. "I'll travel, and I’ll go for a run or I'll Spin. But when I go home and get on the reformer or the Cadillac, my body immediately goes back. I can see an instant shift."
See more in the video below.