Idol group Teen Top's member Changjo showed off his fit body after working out.

Yesterday, Changjo posted on his Twitter, "After finishing working out... No filter self-camera" along with a picture.

In the picture, Changjo is only wearing a wife beater, revealing his muscular body. An unrecognizable person is flying behind him, catching attention.

Internet users who saw this commented, "His body got a lot better," "Broad shoulders," and "Is that a person or a squarrel in the back?"

Photo Credit: Changjo Twitter