Serena Williams' Workout Will Inspire You to Get Off Your Sorry Butt

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.