Fresh off collecting her eighteenth Grand Slam, Serena Williams has graced us with this Beats by Dre commercial, in which she mostly exercises. I'm not sure whether I'm inspired to go to the gym or give up on physical fitness entirely because I will never be one-twentieth as good at anything as Serena Williams is at tennis. Either way, it'll knock the whining right out of you.
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*does 5 lunges* WHY DON'T I LOOK LIKE SERENA WILLIAMS YET.
Seriously though holy crap. She is in incredible shape. She looks like she could snap a man in half. Fitness goals.