https://www.youtube.com/watch?v=rTD79N5PUN0
18 Grand Slam titles don't come about without a lot of hard work.
Serena will have filmed the latest ad for Beats by Dre's Powerbeats2 wireless headphones well before her success at Flushing Meadows at the weekend, but it does help give an insight into the dedication and commitment that have made her one of the greatest players in the history of women's tennis.
Combining clips of a workout with excerpts of the road she took to get to the top of the game and an insight into the ambition she had from an early age, the ad is the sort of thing that would inspire you to head along to the gym if you happened to be feeling lazy of an afternoon.
Powerful stuff.
