"Beastly" idol groups 2AMand BEAST will reveal their chocolate abs on an upcoming special harvest festival (Chuseok) episode of "The Best Ideal Star Couple" on SBS. The two groups were made to compete by exercising with weights as well as ab-rollers while at the same time singing their hit songs, "Can't Let You Go Even if I Die" and "Shock". The boys are said to have been labeled as boyfriend material rather than just beastly idols. Jinwoon and Changmin of 2AM are reported to have cause laughter in particular as they reenacted army exercises. Changmin, though only 24-years-old, was revealed to have already gone through his mandatory military service. Other idols on the show will include 2PM, T-ara, and SHINee. The show will air on the 22nd at 6:15PM, KST. Source: Nate