Noted gym rat Sam Stosur made some noise during the second day of the Australian Open by showing off her incredibly sculpted biceps.

Photos of the 30-year-old Australian were everywhere after her first-round victory over Monica Niculescu of Romania. And it's not hard to see why:

So, what's Stosur's secret? For one, she doesn't do bicep curls.

"I don't spend that much time lifting weights," Stosur told ESPN The Magazine in 2014. "I never do biceps curls, and I very rarely do bench presses."

That's right, Stosur gets those arms without doing curls. We should all be so lucky. The 2011 U.S. Open winner elaborated on her workout routine in her interview with ESPN.

"Push press, dumbbell fly, seated row, exercises like rotations and raises for the rotator cuff and for the little muscles inside your shoulders," she said. "I also do boxing sessions and swimming. I'm not a great swimmer, but I'm getting better. I can swim laps and it's a good workout for me. I only take one day off a week. I do at least one session a day, sometimes two if I'm not practicing on the court."

Stosur's sculpted biceps predictably made waves on Twitter, where they even have their own account.

The 20th-seeded Stosur takes on American Coco Vandeweghe on Thursday.

More Tennis: Serena Williams Is Uncomfortable With Request To 'Twirl'