Book excerpt: As author and high performance coach Pete Leibman demonstrates in this eye-opening book, stronger hours (not longer hours) are the key to feeling and performing your best over the long term. Work Stronger provides a step-by-step, science-based approach for increasing your energy, decreasing your stress, and taking your performance to a higher level. This book also features practical tips and powerful insights from private interviews that Leibman conducted with more than twenty-five prominent leaders. The group includes Chip Bergh, the president and CEO of Levi Strauss & Co., Dick Costolo, the former CEO of Twitter, and Janine Allis, an investor on Shark Tank. You’ll learn how to form stronger habits in four key areas (nutrition, exercise, focus, and renewal) that are highly correlated with greater health, well-being, and performance. You can also get a free assessment of your current habits, and you can download a free copy of The Work Stronger Workbook at WorkStronger.com.