2AM's Changmin reveals his six pack on '1000 Song Challenge'

2AM'sChangmin, who's known to have lost a lot of weight during his pre-debut days, exposed his chocolate abs for viewers.

On the March 10th broadcast ofSBS' '1000 Song Challenge', Changmin surprised viewers when he revealed, "I recently lost 7 kg in just 12 days."

To this, MCLee Hwi Jaeasked whether or not he has obtained his six pack, to which Changmin responded, "My abs are somewhat complete now."

The singer then confidently lifted his shirt for everyone to see, uncovering a perfect set of chiseled abs.

In related news, this week's episode of '1000 Song Challenge' featuresWonder Girls'Yenny,MBLAQ'sSeungho,Hwang Min Woo,Park Si Eun,Tahiti'sJisoo, and more.