Includes index.

Bibliography : page 63.

Do you get tearful watching a soppy film? Or hold back sniffles when your best friend suddenly ignores you? Maybe you sometimes just get a case of the blues you can't seem to shake. Have you wondered why? The answer is in the science behind unhappiness! Whether you keep your tears bottled up or sometimes let it all out, life can sometimes feel emotional. But next time you or your friends have a good cry, you'll understand what's really going on in your brains. Plus, you'll learn tips for decoding what's happening in your body and find out how tears can sometimes be helpful. But mental health is still important, so when tearfulness or sad feelings have crossed the line, you'll also learn when it's time to reach out for help.