YG Entertainment's trainer, Trainer Hwang (Hwang Sung Chan) issued a diet book. Trainer Hwang helped celebrities associated with YG Entertainment (such as 2NE1, Yoo In Na, Se7en, and Gummy) sculpt and maintain their bodies in top shape. With his expertise, he published a book, "Trainer Hwang's Diet Study", revealing his secret know-hows on diet, health, and exercise based on his experience. Through his book, Trainer Hwang redefined the meaning of health for those who are naive and simply desire to achieve a beautiful body and encouraged them to maintain a habit of living a healthier life. 2NE1's Park Bom, who recently came back with their hit single, "I Am The Best", said "Thanks to Trainer Hwang, a corn-loving self like me was reborn with skinnier and more fit legs! This book has the leg workouts that I did and other diet secrets to bodies like 2NE1 members such as Sandara Park, CL, and Minzi" further promoting the book, 'Trainer Hwang's Diet Study'. Actress Yoo In Na also added, "If you just trust Trainer Hwang's words and work hard to follow through, I have no doubt that you will achieve a beautiful body. I hope you guys achieve your diet goals." Source & Photo: Max Movie via Nate