From McKinsey.com:
Let’s look at sleep. We had a CEO, just to give you one anecdote, who was sleeping six hours a night. He thought this was enough. He was performing quite well, leading a large organization, and he thought everything was quote, unquote “fine.” My father challenged him to try and sleep for eight hours a night to see the impact.
The executive was shocked. His comment after two weeks was, “Oh my God, I’m seeing colors. For the first time I am actually seeing colors.” By changing that one little thing he realized significant benefits. He was more aware of everything going around him, more in tune with his own emotions, more able to recognize emotions in others. Sleep deprivation affects everything: our emotional intelligence, our creativity, our ability to solve complex problems. And the challenge with sleep deprivation is that we get used to it. That’s what happened to this CEO. He had gotten used to performing suboptimally. The key for him was to have the realization, “Wait, maybe there’s more.”
We’re starting to be able to quantify the impact of things like sleep deprivation, physical exercise, and nutrition on cognitive performance. Not just on our physical performance and health, but on our ability to think on our feet, to be creative, to collaborate—and to collaborate online, which is actually harder than collaborating in person. (Read more.)
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