Good Sleep Helps You be Alert

Many may be unaware of the importance of getting good sleep. Because, unless you experience the consequences, you don’t realize the dangers. But, it’s better to avoid the consequence altogether and become aware of the dangers.


First and foremost, studies have shown that sleep deprivation affects reaction times of college student athletes as well as West Point cadets. And, besides making you tired and sleepy, sleep deprivation reduces cognitive resources needed to stay alert and be attentive.

In fact, studies have shown that staying awake continuously for just 17 to 19 hours impacts attention performance more than a person with a blood-alcohol level of .05 percent (the level considered legally drunk in most western European countries). And, this level of impairment slows an individual’s reaction time by about 50 percent when compared with someone who is well rested. 

Furthermore, staying awake for twenty-four hours impairs attention performance equivalent to someone with a blood-alcohol level of 0.10 percent. Moreover, this blood-alcohol level is beyond the legal limit for alcohol intoxication in the United States. Also, like alcohol, sleep deprivation affects judgment, making it harder to determine how impaired you really are.

How Insufficient Sleep Affects the Brain

Most of all, poor sleep has a profound effect on judgment. In fact, the prefrontal cortex, an area near the front of the brain responsible for logical reasoning and complex thoughts, is particularly vulnerable to sleep deprivation. For this reason, people have such a hard time recognizing their own fatigue and level of impairment. Therefore, like the drunk driver who thinks he or she is just fine to drive, the tired driver is not always the best judge of his or her ability of drive safely.

Effects on Driving

In fact, attention is absolutely necessary when you are driving. So, if you haven’t had a good night rest, you very likely don’t have the full attention needed to drive. Consequently, driving on congested streets or highways becomes hazardous to you and others.

By the way, according to a National Sleep Foundation survey, 33% of all adult drivers say they have fallen asleep at the wheels. In fact, the Institute of Medicine estimates that drowsy driving is responsible for 20% of all motor vehicle crashes. Or, in other words, drowsy driving causes 1 million crashes, 500,000 injuries, and 8,000 deaths each year in the U.S.

Other Examples

Furthermore, slow reaction times not only cause many car accidents but are also responsible for some of the biggest disasters in history. For example, disasters, such as the Exxon Valdez Oil spill, Chernobyl, Three Mile Island, and the Challenger were all attributed to not getting enough sleep.

Effects on Health Care Providers

Also, driving isn’t the only activity affected by insufficient sleep. Medical professionals such as doctors, nurses, and other healthcare providers endure long sleepless hours. Regrettably, this impacts the quality of care patients get. In fact, each year, medical errors are responsible for nearly 98,000 deaths in the U.S.

What You Can Do

First, there will be nights when you just don’t get enough sleep. So, just be prepared for the consequences. For example, avoid driving altogether, and only drive, if you must, only very short distances. Next, take short naps the following day and try to recover some of the lost sleep. Also, get in a workout. In fact, there are many exercises to choose from to get in that workout. Lastly, the following evening, sleep at your regularly scheduled sleeping time if you can or get help in sleeping.

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