After years of yo-yo dieting, Kit finally hit on her problem: she was working out in a way that wasn’t sustainable. Her solution was one that helped her lose 30 pounds and one that she still shares with her students today, whether she’s teaching a private class in LA or going on tour with a musician client. Her tip? Make it manageable. Specifically, Kit says that her mantra of “three miles or 30 minutes, every day” is what helped her finally break free from weight fluctuations and keep the pounds off for good. As in: run, walk, or hike your way to three miles a day, or do a 30-minute workout instead. “I really do believe wholeheartedly that the middle road is the way to go,” she says. “Anything extreme is not long-lasting.”