J.Y. Park's interesting way of training former artist Rain came up on SBS's radio program, 'Hello Mr. Rok Gi' on July 24. �A guest on the program was Can Entertainment's CEO, Kang Seung Ho, who unveiled the training method. �

He said, "When J.Y. Park was training the singer Rain, he made Rain run on the treadmill while singing. �I was really surprised. �He told me that if you're a singer, you need to be able to sing at least one song well while running on the treadmill."

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DJ Hong Rok Gi stated, "No wonder; Rain's songs seemed to particularly have a lot of breathing. �Rain's breathing of 'seub~ ha~ seub~ ha~' did not just happen. �As expected, half-air half-sound."