In our hyper-connected, 24/7 world, many of us are losing sleep — literally. Our own survey of more than 180 business leaders found that four out of 10 (43%) say they do not get enough sleep at least four nights a week. Such sleep deficiencies can undermine important forms of leadership behavior and eventually hurt financial performance. This article will explore the link between sleep and leadership before discussing solutions that can improve both individual well-being and organizational efficiency and effectiveness.