A powerful, contemporary teen novel about the courage to be yourself in the face of online and in-school peer pressure, from the co-author of Can You See Me? - perfect for fans of Tamsin Winter, Holly Bourne and Moxie.

Fourteen-year-old Eden McCoy doesn't fit in. All she's good at
  is running, and she doesn't even dare join the track team. Her priority
  is to stay in the shadows and avoid the Glossies -
  a ruthless clique of girls who use social media to punish and humiliate
  their targets, led by their queen Bea and her sidekick Mikki.




  But one day, Eden breaks her vow to stay unnoticed: she beats
  track star Mikki in a race. This bold move captures the attention
  of Bea, who decides Eden needs to either prove her loyalty and become
  one of the Glossies - or suffer the consequences. And so The
  Testing begins... 



  As Eden is challenged to play a cruel prank on another kid or
  have that same act inflicted on her, her will is pushed to the limit.
  The only thing keeping her afloat is an unexpected connection
  with a boy called Riley, a fellow runner who messages her online.
  But how deep does The Testing run? And how long until Eden breaks?

A sharply written, grippingly entertaining and moving story that explores the joy to be found in running, sports and exercise - as well as in community, real friendship and solidarity.

Inspired by research into real teen opinions about the risks
  and benefits of social media. 

  Empathetically explores the different ways girls can be 'put
  in boxes' and the pressure to act in a way that society or their
  peers expect of them, with a touching mother-daughter relationship
  at the heart.