Britney Spears Takes Fans Inside Her Intense Workout Routine: 'But I'd Rather Be Dancing'

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Mariah Carey might work out in heels, but Britney Spears works out in a bikini top.
On Tuesday night, the 35-year-old pop princess posted a video to Instagram of herself and her personal trainer doing a set of side lunges with weights, an exercise she admits isn't her favorite. "Training keeps me motivated and inspired... but I'd rather be dancing," Spears captioned the video.

This recent post is just another glimpse into the "Work B**ch" singer's strenuous workout routine. The mother of two has also shared videos of herself doing ab exercises, forward lunges and yoga.

All that hard work in the gym is paying off! A few weeks ago, Spears shared a video of herself frolicking on beach in a teeny yellow bikini.

During an interview with Women's Health, Spears admitted that she doesn't like to spend a lot of time in the gym. "I like my workouts to be effective in a short amount of time," she explained. "I start with 20 minutes of intense cardio -- usually running -- move on to light free weights, body-weight exercises such as push-ups, squats and sit-ups, then finish it off with a stretch."
Here's a look at another one of Spears' workout moves