Public speaking is a necessity of professional life. But what do you do if, like many others, you are basically a shy person? Here is some advice on how to give talks that won't wreck your career or humiliate your thesis adviser.If you plan an academic career, It is highly likely that before you receive your degree, you'll be asked to give a talk on your research - possibly at a national congress, or maybe just to your department. And once you finally graduate, you'll undoubtedly find yourself standing behind a podium. Whatever the situation, it is going to matter that your presentation be well received and that your audience depart with a favourable impression.