2AM's Jo Kwon has recently updated his Twitter with a photo of himself with 2PM's Nichkhun at the gym. � Jo Kwon tweeted on the 20th, "Ugh~~~ It was difficult. Diligently working out today too~! Kwon & Khun ~" This picture caught many people's attention because it showed a side of Jo Kwon and Nichkhun that most were not used to seeing. Apart from their usual delicate and soft images, this picture overflowed with a tough and manly appeal. Fans commented in awe of their arm muscles and offered encouragement, "Wow arm muscles... Kwon Khun.. very manly kkkk I like! Keep working out! Don't lose those cute muscles!" and another said, "husbands with muscles lol".