Behind Mariah Carey’s gentle sweetness is a sense of resiliency that makes her one of the toughest artists in pop. Or as Fitness+ Kickboxing trainer Nez Dally tells Apple Music, “Her music has always been a source of empowerment during the trials and tribulations of life. A story of rising up and being unapologetically you.” So don’t let the flutter of her voice mislead you: She’s given everything to get here. Here's a Mariah playlist tweaked specifically for the gym, whatever your routine. If you hear something you like, add it to your library.