It looked so good! Hahaha

Yoo Soo-bin spots exercise equipment on the Han River promenade and suggests, "Shall we do some exercise?" Yoo Soo-bin gets on the machine first and acts as an 'exercise coach,' demonstrating the technique while saying, "You shouldn't move your upper body." Seeing this, IU also shows interest and gets on the machine. Upon seeing IU's exercise posture, Yoo Soo-bin shouts, "Don't do the wave!" causing a burst of laughter.