@kimkardashian / Instagram 1 / 9
@kimkardashian / Instagram 1 / 9

Keeping Up With Kim Kardashian's Workout! The newlywed mother, 33, is determined to stay in shape, and takes advantage of any free time she may have.

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"Gym time while my baby is napping!" Kardashian captioned a gym selfie on Instagram on July 19.

The mother of 13-month-old daughter North wore a black sports bra and leggings with Nike sneakers. She slicked her long brunette locks back in a ponytail, posing next to a treadmill.

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The reality star recently hit more than 16 million Instagram followers, prompting her to post several bikini shots of her toned body.

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"#NoFlexZone," she captioned one full-body image.