"FYI because of my shoulder, I can only get certain bras over my head NOT THAT IT’S ANYONE'S BUSINESS," she elaborated in a later post.
The star also shared some words of encouragement for her followers who might be struggling to stick with a fitness kick.
"Alright there you have it, no excuses," she said. "Injured or not you can still have a badass workout. I'm absolutely dead and ready to eat something. That was frickin' awesome."
Kaley isn't afraid to admit that she has to work hard to stay fit.
"Bottom line is, you know, I’m not 21 anymore," she previously told Women's Health. "It used to be so easy, I didn’t have to do as much. Now, it’s part of my day — working out is part of my day, eating right is part of my day."
This article originally appeared on Women's Health.