Whenever I ask about sleep patterns, almost every person I speak with wishes they could get more.
Some people struggle to fall asleep or to sleep right through the night. It’s because of hormonal imbalances, stress, or adrenal fatigue. We all know that sleep is important for good health and most of us probably feel like we should be getting more. With all of life’s responsibilities and our many different priorities, sleep doesn’t often land at the top of our lists. But it should. Let’s look at why.
Can I get by with 6 Hours of Sleep?
Every once in a while when life gets crazy, our sleep gets sacrificed and we have to get by on less. We tell ourselves it’s ok because it’s just for a little while until….
I recently came across a fascinating sleep study that shows that even just a few days of not enough sleep wreaks havoc on your mental and physical performance and your health. In the study, researchers divided the participants into four groups: one group slept for 8 hours a night, one for 6 hours, one for 4 hours, and one poor group had to stay awake for 3 days without any sleep at all! The groups who slept for 4, 6, or 8 hours were required to maintain those same sleep hours for two weeks and along the way they were given mental and physical performance tests.
The lucky group who got to sleep a full 8 hours had consistent performance: whatever their performance level was at the beginning of the test, it remained the same throughout the entire two week period. But the groups who slept for either 4 or 6 hours experienced cognitive decreases, motor skill declines and attention lapses that grew steadily worse as the two-week trial progressed.
Everyone expected that the 4-hour a night group would be much worse off than the 6-hour a night sleepers. But one surprise was that while the 4-hour a night sleepers did do slightly worse, there was not as large a difference between the 4-hour and the 6-hour groups as you might expect.
After only one week, one quarter of the 6-hour sleepers began falling asleep randomly during the day. But even more surprising was that after two weeks, the 6-hour a night sleepers performed at the same level as if they had stayed awake for 48 hours straight!
That means that if you sleep for only 6 hours a night, after two weeks, your body will be performing as if you had pulled two all-nighters back to back! If you ever pulled an all-nighter in college at exam time, you know how you felt the next day: pretty awful and totally exhausted. Imagine doing that two nights in a row and still going to work, and running your usual day-to-day life!
But what was really fascinating to me was that the people in the study who experienced the cognitive, motor skill and attention declines were totally unaware of them. When they graded themselves, they did feel a slight decline for a couple days but then after that, they felt that their performance levelled out. In reality, they were continuing to decline each day and they were completely unaware of it!
This just goes to show that we may fool ourselves by saying we’re fine and just having an extra cup of coffee or an afternoon treat to keep our energy going. The reality is that our bodies are not performing optimally because they are sleep deprived. Getting less than enough sleep will reduce both your mental and physical performance after only a few days. While we can all have an off night, it’s important not to let it go on for too long.
How much sleep is enough?
While that study showed that 8 hours of sleep was adequate but 6 was not, it did not break down the sleep time in between. Thankfully, a number of other studies have also looked at this question and have found that while the exact number is different for each of us, generally 7 or 7 ½ hours is the minimum amount of sleep required nightly to avoid performance disruption.
We need that time as we go through several different cycles, which together take about 90 minutes to complete. Two of them are particularly important for our health: deep sleep or slow-wave sleep and REM or rapid eye movement sleep. When we are in slow wave sleep, the body heals and repairs, the immune system does its work and pituitary gland releases growth hormone for muscle and tissue repair. We need this phase for physical wellness.
The other part of the sleep cycle that’s really important is REM sleep. During REM sleep your brain goes into dream state and clears out unnecessary information, reorganizes information, your memory and learning are improved and distilled as you connect the day’s experiences with previous memories and experiences. Your brain requires REM sleep to perform at peak levels and memory, cognitive function and mental performance all suffer when we don’t get enough REM sleep.
In fact, research has shown that without adequate sleep, the body begins to die: mental and physical performance suffer; the immune system cannot function properly; and the likelihood of infections, weight gain, heart disease, diabetes, high blood pressure, mental health concerns and ultimately, death, increases.
The problem is that when we get older, especially at the busy perimenopausal time of our lives, we often tend to sleep less; precisely at the time we need more sleep to restore, repair and heal. One study showed that the typical 80-year-old gets 62% less slow wave sleep than a 20-year old. While more sleep facilitates healing, less sleep can accelerate aging, so extra sleep is also a great anti-aging strategy as well.
We all need to make sleep a priority and most researchers agree that we need between 7-9 hours a night. The exact number will vary by individual and you can experiment and see when you feel best. Even one week of less than enough sleep will result in significant declines. Getting adequate rest regularly is a key component to feeling good, reducing your symptoms, and enabling your body’s own innate healing.
What if I Can’t Sleep?
Despite our best efforts and intentions, we will all experience a sleep disruption on occasion. The good news is that short-term, we can compensate for that when it occurs: our bodies will simply make up for a shortage the next night.
If you do experience a night of unrest for whatever reason, don’t stress about it: sleeping for 10-12 the following night will bring you right back into sync. The key is not to let it go on for multiple nights and to get right back on track the next night.
If you have trouble sleeping, make a sleep schedule and stick to it, sleep in a dark room that is nice and cool, turn off the TV and the computer before bed and read. Avoid sugar and caffeine in the evening: these tips will help you sleep through the night and allow your body to heal. Healthy nutritious food and supportive multi-vitamin supplementation can also help your body fall and stay asleep and support the many processes the body performs during sleep to stay healthy.
If you are experiencing mental symptoms such as fuzzy thinking, memory lapses, anxiety, depression, mood swings, irritability or panic attacks, you may need more REM sleep. If you are experiencing physical symptoms such as weight gain, hot flushes, or fatigue, you likely need more slow wave sleep. Either way, your symptoms are tied to your sleep cycles and more sleep will support your body in healing, just as not enough sleep can make your symptoms worse.
Making sleep a priority in your life will improve your mood and your energy, and increase your mental and physical performance, your ability to overcome challenges and your overall happiness and well-being. It will also prevent and reduce many symptoms of hormonal imbalance.
New research is also showing that insomnia is often connected to stress levels. If you are wired and can’t sleep or if you feel that you have a lot of stress in your life, I can help you find the right herbal and/ or nutritional formulas so you can finally sleep peacefully.