Changmin revealed a picture during his workout.

2AM Changmin posted on his Twitter, "Finishing up with stretching. At this time, DQ dancer team's Joohee came. I woke up and came here and Joohee came before going to bed. Seeing her early in the morning was good. Well, end of workout!" along with a picture.

In the picture, Changmin is sitting on top of an exercise equipment, taking a picture of himself through the mirror. He is wearing a yellow hoodie and is showing off his thighs with the short shorts he is wearing.

Internet users who saw this commented, "He must work out a lot", "His yellow sweater is cute" and "So muscular."

Photo Credit: Changmin Twitter