India, May 4 -- Around 170 people gathered along Seoul's Han River on May 2 for an unusual 'power nap' competition, highlighting the rising sleep deprivation in South Korea. Held at Yeouido Hangang Park, the event invited participants to go to go head-to-head in a public sleep-off. Now in its third year, the contest judged 'sleep concentration,' with disturbances like feather tickling and mosquito sounds testing participants. Winners were determined using sleep-tracking data measuring deep sleep duration and overall quality, as spectators watched the unusual competition unfold.HTC...