Your phone was not designed by accident.

It is an ordinary Tuesday evening, in tens of millions of homes. A fourteen-year-old lies in bed, surrounded by notifications that pulse and vanish and pulse again. Nobody in this house is in crisis. This is simply what growing up looks like now ? for the first generation of teenagers who have never known a world without a supercomputer in their pocket.

Digital Armour is the instruction manual nobody handed them.

Drawing on ninety-one peer-reviewed scientific studies ? from neuroscience to clinical psychology to public health ? this book replaces panic with precision. It does not argue that teenagers should quit the internet. It shows, chapter by chapter, exactly how the digital world interacts with a developing brain, and exactly what the evidence says genuinely protects against harm.

Inside, you'll discover:

• Why the teenage brain ? not weak willpower ? is the real reason a phone is so hard to put down
• The specific combination of digital experiences (not screen time) that the science shows actually predicts harm
• What cyberbullying does to the brain, and the single most effective thing a parent can do about it
• The hidden architecture of online radicalisation ? and how it starts with a feeling, not an idea
• Why warmth protects teenagers online more reliably than any parental control software
• The evidence-based digital tools that can genuinely treat anxiety, OCD, and trauma ? and the ones that quietly fail after three months
• Why twenty minutes of vigorous exercise may be the single most powerful tool against digital-related brain fog

Written directly to teenagers, with a "For Parents" section closing every chapter, Digital Armour is for anyone who has ever wondered whether the science backs up the headlines ? and what to actually do about it tonight.

You were not broken. You were targeted. This book shows you how to fight back.