Burpee: you either love them very much or hate them very much. If you're like most people, you probably fall into the latter group. This movement will knock out all your breath, make your legs tremble, but it will strengthen your shoulders like nothing else. In this guide to burpees, you will learn how to perform them correctly, how to avoid the most serious mistakes, when to apply them in your training, and how to adjust them for pregnant women and to avoid injuries.