No-sleep challenge: the dangers of sleep deprivation

Most of us will be all too familiar with that dopey, groggy feeling of being tired after a restless night. Some social media users have taken tiredness to the extreme, however, by taking part in what they call a “no-sleep challenge.”

One 19-year-old Youtuber, Norme, live streamed his attempt to break a world record for consecutive days without sleep. At the 250-hour mark, viewers voiced concerns about Norme’s health and wellbeing but he eventually finished...