f(x)'s Luna shared about healthy dieting in 'Beauty+'.

The idol first emphasized the importance of health, saying, "Health is first and foremost. Recently, my health was so bad that it was difficult for me to sing, so I changed my diet and gained 5kg." She then shared her dieting method, and explained, "Before I go to bed, I think back and go over what I ate that day. If I feel like I've eaten too many high-calorie foods, then I tell myself that's enough for today, and I should eat less tomorrow. It also motivates me to exercise."

Luna continued, "Also, I was able to fix my unhealthy eating habits and life patterns through 'Get It Beauty'. I learn a lot from the unnies."