Nobody had a bigger summer than Charli xcx, whose clubby, confessional album BRAT coated pop culture—murals, runways, martinis, memes—in a proudly messy slime green. Some of the fever may have cooled by the season’s end, but Bakari Williams—the Cycling, HIIT, and Rowing trainer who curated this fiery Fitness+ playlist of Charli’s greatest hits—isn’t ready to move on just yet. “I’m always in the mood for a little adventure,” he tells Apple Music. “That’s why I love Charli. She’s sweet, sassy, fun, sexy, and kind of weird in a way that I can’t get enough of. Her nightclub party vibe energizes me whether it’s getting ready for the weekend or to sweat in a workout.”