“Jump It Out. My newest obsession during COVID/quarantine! All you need is 20 mins, a jump rope, and good music !” the “Big Bang Theory” alum wrote alongside a video of herself in a black skirt and black workout halter top.

Despite Cuoco’s crisscross jumping coordination and cardio jogging, some of her 6 million followers took exception with Cuoco, 34, donning a mask during her workout.

“You’re wearing a mask because why?” probed one Instagram commenter.

“You don’t need a mask when you workout :),” wrote another user, while another added, “Don’t use mask to exercise. CO2. Nice going.”

The comments came in a flurry, however, it didn’t stop the “Harley Quinn” voiceover actress to fire back at trolls who lent their two cents.

“For everyone and their mask comments. I wear a mask when I’m in an enclosed space around others, which I was,” she wrote in the comments section. “I’m protecting myself and everyone around me. That’s why I choose to wear a mask. Thanks for playing.”

The Critics’ Choice Award winner was lauded for her consideration for others as many of Cuoco’s followers defended her decision.

“If she feels comfortable working out with a mask, good for her. That is her prerogative. Out of respect for people, that’s what I do as well when in the gym. It’s safer for you and the others around you,” chimed one Instagram user.

“Wearing a mask is not dangerous if you listen to your body,” began another. “Kaley will likely feel a lot fitter after exercising like this once she can train without wearing a mask. It’s like athletes doing altitude training. She is being a responsible citizen, it’s a shame more people can’t be!!”

“Mask wearing protects others and yourself. SMH that this still needs to be explained,” added another commenter.

Cuoco will star in a new drama “The Flight Attendant,” which recently resumed production after being halted by the coronavirus pandemic.

In “The Flight Attendant,” Cuoco plays Cassie Bowden, a heavy-drinking flight attendant who finds herself waking up in the wrong hotel, in the wrong bed with a dead man and no bearings about what happened.

The series will debut on HBO Max this fall.