Emily Hemendinger, University of Colorado Anschutz Medical Campus Olympians - athletes at the top of their sport and in prime health - are idolized and often viewed as superhuman.

Olympians Ben Proud and Fred Kerley are among those to have signed up to the controversial venture James Sutton, Steph Chambers/Getty Images It is just over three months until the Enhanced Games begin their bid to "safely evolve mankind into a new superhumanity" by hosting a competition in which athletes can use performance-enhancing substances.

Hello. Today we're writing about the use of sleeping tablets among professional footballers. It's a much bigger issue than you might have thought.