Samuel Kim revealed that he's been trying hard to gain weight.
He was a guest on 'Video Star', where he revealed, "I've been stuffing myself up to my throat. I'm on stage by myself, and if I'm too thin, the stage looks empty." He revealed that he had gained 7 kg (15.5 lbs) in 3 months.
Han Dong Geun and JungGiGo then 'advised' him by telling him that he shouldn't chew his food and that he should eat faster if he wanted to gain weight.
Hopefully he just eats healthily instead of trying to overeat.