Britney Spears “I’m A Slave 4 U” Cardio Hip Hop

Ready to get your heartbeat up? Britney Spears never goes out of style in my book. Fit in some cardio today to her classic “I’m A Slave 4 U” as I guide you through a dance workout.

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*This video was originally published on The Fitness Marshall’s Youtube channel. For more workout videos visit