Dr. Matthew Walker at U.C. Berkeley’s sleep research lab has discovered some essential correlations between a good night’s sleep and better brain functioning. Whether you still sleep like a baby or struggle with stress or pain induced insomnia, it’s fascinating to learn what our brain is doing the one third of its daily life while we are sleeping. Walker found:
- Sleep refreshes or restores the neural connections between the pre-frontal cortex (the CEO of resilience in Bouncing Back) and the emotional processing centers of the amygdala. Sleep strengthens the capacities of the PFC to regulate our impulses of aggression and fear when we’re awake again. (Researchers are now finding that sleep disturbances can also cause symptoms of PTSD and depression, not just that PTSD and depression disturb someone’s sleep. When clinicians can restore normal sleep, peole even with severe mental health conditions show significant improvement.)
- A good night’s sleep can take the painful sting out of difficult emotional experiences from the day before, or balance our reactivity to the next day’s emotional challenges. During REM sleep, the brain is devoid of any stress neuro-chemicals. The brain can reactivate emotional and problematic memories and re-process them in reflective dreaming, free of stress chemistry. REM sleep functions like overnight therapy.
- Sleep is essential to prime our brain for learning. Bursts of electrical activity during non-REM sleep seem to help the brain move information from short-term to long-term memory storage, making room for soaking up new information the next day.
- Sleep also helps store information after we’ve learned it. Slow wave sleep helps cement new information in to the neural architecture of the brain so we don’t forget it. (This sleep state can even cross-link new pieces of information, extracting commonalities and developing novel insights into problems from the night before.)
Walker says, “Simply put, the single most important thing you can do each and every day to reset your brain and body health is to sleep. Once you start to get anything less than about 7 hours of sleep, we can start to measure biological and behaviors changes quite clearly. Lack of one night of sleep causes detriments to your brain and body that far exceed anything you would see from a lack of food over the same duration of time.”
Here’s the link to the entire article “Why You Should Sleep Your Way to the Top” in the Greater Good Science Center’s website.
Walker doesn’t offer tips for better sleep in this article.
Here are seven tips from the Mayo Clinic:
Sleep tips: 7 steps to better sleep from the Mayo Foundation for Medical Education and Research, compiled by Mayo Clinic staff, July 7, 2011.
No. 1: Stick to a sleep schedule
Go to bed and get up at the same time every day, even on weekends, holidays and days off. Being consistent reinforces your body’s sleep-wake cycle and helps promote better sleep at night. There’s a caveat, though. If you don’t fall asleep within about 15 minutes, get up and do something relaxing. Go back to bed when you’re tired. If you agonize over falling asleep, you might find it even tougher to nod off.
No. 2: Pay attention to what you eat and drink
Don’t go to bed either hungry or stuffed. Your discomfort might keep you up. Also limit how much you drink before bed, to prevent disruptive middle-of-the-night trips to the toilet.
Nicotine, caffeine and alcohol deserve caution, too. The stimulating effects of nicotine and caffeine – which take hours to wear off – can wreak havoc with quality sleep. And even though alcohol might make you feel sleepy at first, it can disrupt sleep later in the night.
No. 3: Create a bedtime ritual
Do the same things each night to tell your body it’s time to wind down. This might include taking a warm bath or shower, reading a book, or listening to soothing music – preferably with the lights dimmed. Relaxing activities can promote better sleep by easing the transition between wakefulness and drowsiness.
Be wary of using the TV or other electronic devices as part of your bedtime ritual. Some research suggests that screen time or other media use before bedtime interferes with sleep.
No. 4: Get comfortable
Create a room that’s ideal for sleeping. Often, this means cool, dark and quiet. Consider using room-darkening shades, earplugs, a fan or other devices to create an environment that suits your needs.
Your mattress and pillow can contribute to better sleep, too. Since the features of good bedding are subjective, choose what feels most comfortable to you. If you share your bed, make sure there’s enough room for two. If you have children or pets, set limits on how often they sleep with you – or insist on separate sleeping quarters.
No. 5: Limit daytime naps
Long daytime naps can interfere with nighttime sleep – especially if you’re struggling with insomnia or poor sleep quality at night. If you choose to nap during the day, limit yourself to about 10 to 30 minutes and make it during the midafternoon.
If you work nights, you’ll need to make an exception to the rules about daytime sleeping. In this case, keep your window coverings closed so that sunlight – which adjusts your internal clock – doesn’t interrupt your daytime sleep.
No. 6: Include physical activity in your daily routine
Regular physical activity can promote better sleep, helping you to fall asleep faster and to enjoy deeper sleep. Timing is important, though. If you exercise too close to bedtime, you might be too energized to fall asleep. If this seems to be an issue for you, exercise earlier in the day.
No. 7: Manage stress
When you have too much to do – and too much to think about – your sleep is likely to suffer. To help restore peace to your life, consider healthy ways to manage stress. Start with the basics, such as getting organized, setting priorities and delegating tasks. Give yourself permission to take a break when you need one. Share a good laugh with an old friend. Before bed, jot down what’s on your mind and then set it aside for tomorrow.
Know when to contact your doctor
Nearly everyone has an occasional sleepless night – but if you often have trouble sleeping, contact your doctor. Identifying and treating any underlying causes can help you get the better sleep you deserve.