There are two possible explanations for this. Either senior executives, with the help of assistants and hard-working middle managers, do less and take more time for sleep. Or senior executives have had the wisdom and discipline throughout their career to get enough sleep and thereby maintain a high performance level without burning out.
Our conclusion is that the latter is the case. “Sleep has always been foundational for my performance,” Cees’t Hart, president and CEO of Carlsberg Group, shared with us. “And especially to perform in a way that is required by my current job, I need seven hours of sleep, every night. Of course, with intense travel and work commitments, sometimes this is compromised, and when that happens, it comes with a cost. When I sleep less, I perform less.”