So how does Kendall Jenner, one of the most in-demand models of the season and the new face of Calvin Klein Jeans, work out? It’s no secret she trains with fitness guru Gunnar Peterson, or that she commits to a series of cardio, muscle-building, planking, and ab-sculpting sessions before she hits the runway. But what really energizes her, or anyone for that matter, when it comes to sweating it out? It’s all about the music. In Jenner’s case, it’s not pop-infused, teeny-bopping tunes that power her workouts. Think more along the lines of Drake’s heart-pumping “0 to 100” or the thunking bass of A$AP Ferg’s “Work.” And let’s not forget her brother-in-law Kanye West’s raps. We’re suspecting she receives those fresh out of the studio—not a bad way to get into the gym-going mood.