Olympics - Skeleton: Korean 'Iron Man' Yun recalls pain to gain

South Korea's Skeleton Gold medalist Yun Sung-bin speaks during an interview with Reuters in Pyeongchang, South Korea, February 18, 2018. REUTERS/Kim Hong-Ji

PYEONGCHANG, South Korea (Reuters) - It was not the fear of speeding down a snaky icy track at more than 100km per hour head-first and face-down, his chin hovering a few inches over the surface.

For South Korean skeleton slider Yun Sung-bin, then 19, the hardest of it all was an eating spree to gain 16kgs in just two weeks.