Enter former British pop sensation Mel B, who sang and danced her way into our lives in the 90s with the Spice Girls.
"Dancing has been a big part of my life," Mel told People. "I kind of fell into it. I didn't go, 'I'm going to dance and lose weight.' I did it and it just ended up happening, which is brilliant."
She said she's pumped about getting to know the participants and "follow[ing] them along on their story and their journey."