‘The Big Bang Theory’ alum showcased an array of styles during an intense workout with her trainer Ryan Sorenson.Kaley Cuoco is hitting the gym hard!

The Big Bang Theory alum’s trainer, Ryan Sorenson, posted one of her rigorous post-baby workouts on Instagram on July 20, showing the actress as she completed an intense full-body workout.

Cuoco, 37, who gave birth to her first child Matilda — shared with her partner, actor Tom Pelphrey — on March 30, was quick to add a reference to the multiple hairstyles she sported in the video.

“One speed and 17 hairstyles 😂,” the actress jokingly wrote in the comments section.In the video — set to a Sickmix remix of the track “Running Up That Hill” — Cuoco completed a wide range of exercise moves, including pull-ups, medicine ball twists, running with a jump rope, lateral raises and side planks.

But it was the actress’s hair that almost stole the show as she completed the hardcore workout. At various points in the video, she appeared with a messy bun, a half bun with half her hair flowing down her back, a sleeker bun, a side bun and even with her hair fully untied as she exercised with her jump rope.

Sharing another black-and-white selfie later, she noted she was feeling “strong” after the postpartum workout.The health-focused actress also continued her gym routines during her pregnancy.

In October last year, Cuoco posted a series of snaps on her Instagram Stories, showing off her baby bump and giving a glimpse at her workout routine.