SEE ALSO: Jung Hyung Don sheds 10 kgs (22lbs) and shows off his slimmed down body

A KBS variety rep told Newsen today, "Sung Si Kyung will be substituting for Jung Hyung Don for the filming of 'Our Neighborhood Arts and Physical Education--Judo edition', which will take place on September 23."�

A rep from the program related, "Currently, Jung Hyung Don's condition isn't all too great, so we will continue to wait and see. Whether Jung Hyun Don will partake in next week's filming has yet to be decided. Sung Si Kyung will act as a fill-in for this week, and his reappearance will be discussed with the production crew."�

Meanwhile, Jung Hyung Don's agency FNC Entertainment stepped forward to relay, "Due to symptoms of pneumonia, Jung Hyung Don was admitted into the hospital last Friday and has been receiving treatment. We don't know when he will be discharged, but we deemed that it will be difficult for him to participate in any filming from Monday through Thursday. So we have adjusted his schedule."�

Hopefully, Jung Hyung Don will be all right and back on his feet in no time, making us smile and bringing us laughter!�