The Weeknd’s music is about as dark as pop or R&B gets before it becomes something else entirely. But it also has a sense of fearlessness and extremity that makes him a surprisingly good workout companion. “He always has something to get you ready to hammer out a workout,” Fitness+ Strength trainer Kyle Ardill tells Apple Music. “His upbeat tracks help drive you through the intensity, while his slower, darker tracks are great for getting focused to draw out your grit.” So hit play, dig in, and if you hear something that gives you that jolt, add it to your library.