Serena Williams is about to seriously inspire your next gym session. The tennis star has just secured her third U.S Open and is the proud owner of 18 Grand Slam trophies; so how does she get fit to win? Well, if her new Beats by Dre commercial is anything to go by a lot of skipping, jumping with high knee lifts, splits (for flexibility) and gruelling isometric holds with a hefty medicine ball.

Need more motivation? Asides from ogling her six-pack (Jamie, our picture assistant, noted you could cut yourself on her abs) we’re pretty pumped by the advert’s soundtrack – ‘Black Unicorn’ by 2 Chainz.

See you down the gym.

<iframe width="560" height="315" src="//www.youtube.com/embed/rTD79N5PUN0" frameborder="0" allowfullscreen></iframe>