“Impossible is a word found only in the dictionary of fools,” said Napoleon Bonaparte, a man who wouldn’t let limitations get in his way. Of course, his plans for world domination didn’t pan out as he’d hoped, but no one has ever lived up to his ambition. The casual reader about to embark on a journey through this book could do a lot worse than familiarize themselves with the brief notes the general wrote about above—a refusal to accept failure, a willingness to push oneself to the limit, and a passionate embrace of life. Be resolute, put on your destiny cap, and prepare to face challenges you thought impossible. In the following pages are 100 activities that no ordinary person is likely to attempt—and, in some cases, unlikely to even attempt. Many of them, though, are more achievable than you might imagine, given the level of risk and a little lateral thinking. Some challenge the boundaries of science, while others appeal to thrill-seekers, people who want to discover their personal limits, and those simply looking for new experiences.