A documentary called Hot Blood Men[1] captured the group's rigorous training program.
In this documentary, former member Jay Park (Jaebeom) finished at the top spot and received the most fan votes.
It also featured the elimination of three trainees from the group: Lee Swichi, Jeong Jinwoon, and Yoon Doo-joon who were all cut.
By the end of the training process, One Day had been reduced to an eleven-member group.
2AM (Korean: 투에이엠), became a four-member boy band and ballad group consisting of 2PM (Korean: 투피엠), became a seven-member hip hop band formed by JYP Entertainment, consisting of