When you are a student in middle school, high school, and college, you are always given the same advice when you have an important test or even a standardized test the next day in class. Eat a healthy, fulfilling breakfast and get a good night’s sleep, your teachers tell you. Why do they bother? Because it’s true and it works. If you are running on fumes after only sleeping for three or four hours, you’re just not going to be as productive as you would be with a full eight or nine hours. You need to give your brain rest so it can be recharged for the coming days. The same applies to your work. The less sleep you get, the more detriment it will bring to your job and, eventually, your career.

But the scariest part is this: the more your lack of sleep turns into a pattern, the more chance you have of developing insomnia, which is a chronic inability to fall asleep or even stay asleep. And if you suffer from insomnia, your cognitive functions will begin to decrease as well as your reactive and response time, but your irritability, stress, and anxiety will increase. A good night’s sleep is unquestionably essential.