Flying, spiders, snakes - there's a fear for everyone! Or maybe you're just feeling apprehensive? Whether you want to confront your fears or not, the science behind them can be fascinating and may help us understand and overcome them. If your palms are sweaty, your knees weak and your arms are heavy, adrenaline is likely running through your body, and this isn't always a bad thing. Sometimes fear comes with excitement, and it has been used in entertainment for centuries, however we draw the line at flying spider-snakes.