Sleep is vital. Think about it: sleep loss causes performance to suffer, but getting plenty of sleep results in better performance. Most people wouldn’t consider going without food or water, and sleep is no different—it’s a necessity. Lack of sleep is equivalent to being drunk. In fact, after being awake for 18–20 hours, you’d function as if you had a blood-alcohol content of .1% (about four drinks for a 150-pound man). Little or no sleep affects your eye-hand coordination, reaction time, and multitasking abilities—and how you remember important sequences, remain attentive, and stay organized. If you’re tired, you may be able to learn skills and work well enough, but training while fatigued might impact your ability to do your best.
Many people believe that they can overcome being tired or “get used to it.” But evidence suggests sleeping only 6 hours can jeopardize your resilience, health, and well-being. As people become more sleep-deprived, they become less aware that they’re impaired. When someone says, “I’m used to being tired,” they’re simply used to having impaired awareness and judgment. When possible, sleep more to help boost your energy level, thinking ability, and readiness!