Group BTS released a practice video of their song, "War of Hormone."

On October 27, BTS posted their practice video, and it wasn't in an average practice room. It was at a grass field in Yang Pyoung.

As soon as the music began, BTS ran toward the camera and showed fun and playful dancing along with their choreography.

In addition to the music, their laughter and voices were heard in the background, showing how much fun they were having during practice.

Currently, BTS is performing actively with their first official album, DARK & WILD.