Sleep is underrated and underestimated. We’ve all pulled all-nighters before, believing that they boost productivity. The truth, however, is that sleep deprivation promotes brain damage and decreases productivity dramatically. Fast Company published an online article in April 2014 that explained the hazards of sleep deprivation. The article revealed that sleep loss increases the probability of mental errors. While your error may not lead to an oil spilol or space shuttle disaster, your sleep loss will impair your mental processing leading you to make more errors than you normally would: errors you will have to fix later. Sleep improves intelligence and enables the brain to process information smoothly. Why do we insist on depriving ourselves of this benefit? If the project or job is so vitally important, then it demands that we be at our best. Lost sleep can never be “caught”; once gone, it remains gone, while always leaving its mark.