Kaley Cuoco Rocks Tight Yoga Pants For Abandoned Gym Workout: '3.43 A.M.'

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Kaley Cuoco won't let anything get in the way of her workouts – even jet lag. The "Big Bang Theory" actress is currently in Italy with the crew from her upcoming TV show, "The Flight Attendant," and she's been keeping her Instagram followers updated on her travels – and, apparently, on the workouts she'll undergo at crazy o'clock.

Kaley kicked off her stories at 2.59 a.m. this morning with a sleepy-looking selfie that confirmed she was completely jet-lagged, although the 34-year-old was in the gym within the hour.

Kaley Cuoco/Instagram

You've got to give it to Kaley. Hitting the treadmill after a packed day (and no sleep) takes determination.

Kaley's next story showed her in selfie mode and inside an abandoned gym – likely in a hotel. The actress was walking on a treadmill and looking pretty good for someone who needed some shut-eye.

Kaley was wearing a long-sleeved and pastel blue top paired with a tight black pair of yoga pants. The actress also wore black-and-white sneakers. In true Kaley style, the star's hair was scrunched up into a messy bun.

"This is what a gym looks like at 3.30 in the morning," Kaley said. The actual time-stamp on the stories showed it to be 3.43 a.m.

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Kaley's "Big Bang" theory character Penny was known for not coming with a last name. The girl behind the street-smart Penny has, however, explained her last name, and it all ties in with her current location.

Kaley is in Rome. The star's "A Cup of Cuoco" Instagram series was busy over the past 24 hours, with Kaley explaining the purpose for her travels, plus an interesting tidbit.

"We’re back to shooting The Flight Attendant in Rome – I know, I’m so lucky it’s nuts,’ she began, adding:

"I’m very excited for this flight, I’m very excited to do nothing. I can’t believe we’re going there. I had to learn a little Italian which I studded over the break and have now forgotten so hopefully when I get to Italy it will come back to me."

Kaley then spoke of her surname.

"I’m Italian that’s what Cuoco means – cook," she said.

Kaley Cuoco/Instagram

Kaley has rocked some pretty awesome workout gear. The actress even wore Halloween candy-print leggings in the fall of last year, with husband Karl Cook posting an Instagram photo of his wife in selfie mode – Kaley was showing off her rock-hard body in a black sports bra and leggings. Both were covered in candy prints.

As to working out, Kaley is a cardio fan, but she's a yoga queen above all else, with the relaxing exercise frequently being shown on the star's social media.

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Kaley's breakfasts seem pretty ordinary – no mentions of fancy chefs or juicing equipment from this star.

Kaley admitted to eating the "same little bit of peanut butter on toast every morning" when speaking to Women's Health.

Kaley did, however, reveal a love of In-N-Out. The popular burger chain is adored by celebs including Gordon Ramsay and Kendall Jenner.

"Tonight I’ll be going to In-N-Out and doing one of their grilled cheeses, massive fries, and a shake. That’d be a cheat for me," she continued.

Clearly, Kaley knows how to work the calories off.