This gym, named Curves Sanghyeon Club, is on the fifth floor of Wonhee Castle Plaza Building B in Sujigu, Yong-in. By nature it’s a sunny place, incorporating the LED-lit circuit far from windows on the far side of the door. At the entrance you encounter the small, open office with a tiny desktop computer for employees, console and an additional monitor to gauge the day’s entrance. You go straig..