Poor performance?

The most obvious effect of sleep deprivation is on performance. Tiredness slows you down physically and mentally – reducing your output and productivity. It will also impair your ability to think clearly and rationally – affecting the quality of your work and the decisions you make. If you’re aiming for a leadership position, not being able to make good decisions will be the death of your leadership dreams. And if you’re currently in a leadership position, poor decision-making could result in being demoted or worse.