8 Hours Mike
My college roommate and best friend, Mike, is an outlier in many ways. He’s a native Philadelphian who cares more about international politics than local sports teams, manages to be a decent athlete despite being excruciatingly slow at virtually everything he does (his nickname is “Mollasses”) and, in our college days, was perhaps the only person on campus religious about getting eight hours shut-eye every night. If you wanted someone to stay up late or get up especially early, Mike was the wrong guy to ask. He was insistent – and still is – on getting his eight hours of sleep whenever and wherever possible. He is “8 Hours Mike”.
Benefits of Sleep and Health Risks with Sleep Depravation
I doubt 8 Hours Mike was fully aware of the health benefits of sleep but it has probably played no small part in his success in college and in life. Dr. Matthew Walker, a neuroscientist and Director of UC Berkeley’s Sleep and Neuroimaging Lab, expounds on the critical importance of sleep across the age spectrum in his book released earlier this month, Why We Sleep. Dr. Walker claims, based on dozens of research studies, that sleep is the single most effective thing we can do to reset our brain and body health each day. Sleep helps cement positive memories and mollifies painful ones, and melds past and present knowledge, inspiring creativity.
Conversely, insufficient sleep causes havoc. Insufficient sleep – routinely sleeping less than six or seven hours a night – demolishes your immune system, more than doubling your risk of cancer, and also increasing odds of diabetes, heart disease and dementia, among other effects. Too little sleep also makes it more difficult to manage stress and anxiety. It’s no exaggeration to say that not enough sleep can kill you. In fact, more vehicle accidents are caused by drowsy driving than alcohol and drugs combined. This is because, as studies confirm, people awake for nineteen hours or more are at least as cognitively impaired as those who are legally drunk.
Basics of Sleep
Recent advances in neuroscience have helped us learn more about the nature of sleep. Sleep comes in two forms: Non-REM sleep and REM sleep. Non-REM sleep is more important for restoration and cementing memories; meanwhile, REM sleep allows for dreaming which helps spark creativity.
In addition, our sleep is influenced by two, independent biological elements: circadian rhythm and melatonin. The circadian rhythm is effectively a personal 24-hour clock that signals to your brain that it’s time to wake up or go to sleep. About 40% of people have a circadian rhythm that creates “morning types”, another 30% are “evening types” and the remaining percent fall somewhere in between. The release of melatonin helps spark drowsiness – based on “sleep pressure” and is based primarily on how long one has been awake.
Sleep Across the Age Spectrum
As we age, the type of sleep changes but achieving a full night’s sleep is just as important. In midlife and beyond, we witness a reduction in quantity and quality, sleep efficiency and disrupted timing of sleep. By age 70, we have lost about 80% to 90% of the deep sleep we enjoyed as a teenager. Further, our sleep efficiency – or the amount of bed time to actual sleep time – falls from 95% to between 70% to 80%. Therefore, in order to achieve 8 hours sleep, we need 10 or more hours of bed time. In addition, there is a change in our circadian rhythm as we age so we tend to tire earlier, leading to earlier and earlier bedtimes. Hence, the “early bird” dinner special.
Managing these changes as we age is critical. The lower an older individual’s sleep efficiency score, the higher the mortality risk, the worse their physical health, the more likely they are to suffer from depression, the less energy they report, and the lower their cognitive function, typified by forgetfulness. In some cases, forgetfulness may be more linked to poor sleep than a specific mental condition.
Best Practices and Impact of Living Environment
(a) Minimize electrical light, esp. blue light from LEDs found in many electronic devices, particularly within an hour before bed time.
(b) Regularize temperature – ideally in the mid-60s – to make it easier to fall and stay asleep
(c) Minimize caffeine, esp. in the afternoon and evening, as this can throw off the timing of your melatonin release
(d) Minimize alcohol, esp. in the afternoon and evening, as it negatively impacts the quality of sleep
(e) Create flexibility on your work schedule, if possible, to better align with your circadian rhythm
At Smart Living 360, one of our central goals is to enhance personal well-being. Your living environment can be customized to optimize your sleeping, including some of the suggestions above, and, with advanced technologies, your sleep can be easily be analyzed and measured to make sure you are getting the slumber you need. Small changes can be significant and nudge you to better health, literally adding years to your life so can you take full advantage of the Longevity Bonus.
A Need for More 8 Hours Mikes
A century ago, less than 2 percent of the population in the US slept six hours or less a night. Now, almost 30% of American adults do. We could help our individual health and our society at large if, like 8 Hours Mike, we were more insistent about getting our eight hours of sleep each and every night.