2AM's Changmin and 8eight's Lee Hyun recently displayed their muscles! Through YouTube, a video of Changmin and Lee Hyun practicing "Lay on that Sea" for KBS 'Immortal Song 2' was revealed. Changmin and Lee Hyun shook the hearts of female fans due to their honey-like skin and nice arm muscles. They also made their fans laugh with their random actions throughout the video. Check out the video below! Source + Picture: Seoul News via Naver