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The Science of Sleep | Dr. Sara Mednick

Apr 27, 2022 52m 46s 15 insights
<p><em>New episodes come out every Monday, Wednesday, and Friday for free, with 1-week early access for Wondery+ subscribers.</em></p> <p>---</p> <p>If you're trying to improve your sleep, thinking about doing so right before you get into bed might not be the best approach. </p> <p><br /></p> <p>Dr. Sara Mednick, is a cognitive neuroscientist at the University of California, Irvine, and the author of the new book <a href="https://www.hachettego.com/titles/sara-c-mednick-phd/the-hidden-power-of-the-downstate/9781549136191/" rel="noopener noreferrer" target="_blank"><em>The Power of the Downstate</em></a>. This episode is part of our month-long "Mental Health Reboot" series to mark Mental Health Awareness Month. </p> <p><br /></p> <p>According to her research, Dr. Mednick says that we need to take a more holistic approach to getting better sleep, and that sleep is just one of the ways that our bodies rest and restore.  </p> <p><br /></p> <p>In this conversation, we talk about:</p> <ul> <li>The nuances of napping</li> <li>Dr. Mednick's definition of the "downstate"</li> <li>Whether there are practices that can compensate for poor sleep</li> <li>Why heart rate variability is an important measurement of health</li> <li>Why sex is so helpful for sleep</li> <li>And when to take melatonin to best effect</li> </ul> <p><br /></p> <p><br /></p> <p><strong>Full Shownotes:</strong> <a href="https://www.tenpercent.com/podcast-episode/sara-mednick-445" rel="noopener noreferrer" target="_blank">https://www.tenpercent.com/podcast-episode/sara-mednick-445</a></p> <p><br /></p>
Actionable Insights

1. Adopt Holistic Sleep View

Think about sleep more holistically, not just as a nighttime endeavor, but as one of the body’s many ways of resting and restoring, integrating daily activities into your sleep strategy.

2. Cultivate Daytime Downstates

Intentionally engage in restorative practices during the day, such as slow deep breathing or inversion poses (legs up the wall for 10 minutes), to calm your heart and activate ‘restore’ processes.

3. Optimize Morning Light Exposure

Expose yourself to real sunlight early in the morning for at least 15 minutes, preferably outdoors, to jumpstart your circadian rhythm and signal to your brain that it’s daytime, improving sleep quality at night.

4. Control Nighttime Blue Light

Filter blue light from screens in the evening by using ’night shift’ settings, opting for candlelight, or using yellow-filtered glasses to signal to your brain that it’s time to decrease arousal and release melatonin.

5. Time Exercise Strategically

Perform cardio workouts as early in the day as possible and strength training in the afternoon, but avoid any exercise within four hours of bedtime to prevent over-stimulating your sympathetic nervous system.

6. Manage Sleep Onset Anxiety

If you can’t sleep due to worry, get out of bed and write down your concerns until you’re tired, practice gratitude by listing 10 positive things, or read a dense, slightly challenging book to ‘poop out’ your mind.

7. Prioritize Nose Breathing

Practice nose breathing throughout the day for all activities, including exercise, to become a more efficient breather, and promote nose breathing during sleep by sleeping on your side or using a gentle mouth tape.

8. Enhance Heart Rate Variability

Improve your heart rate variability (HRV) through parasympathetic practices like slow, deep breathing, meditation, yoga, or biofeedback, as high HRV indicates a strong ‘restore’ system that calms you quickly.

9. Use Sex for Sleep Onset

Time sexual activity to occur right before you want to sleep, as the intense sympathetic arousal during climax is followed by a massive ‘restore’ response, aiding in sleep onset.

10. Foster Emotional Connection

Engage in consensual physical touch, such as hugs or holding hands, and deep conversations with loved ones, as these actions activate your ‘restore’ system and increase feelings of safety, calming your ‘rev’ system.

11. Consider Melatonin Supplementation

If you have sleep onset or maintenance problems, try taking 1 milligram of melatonin one to two hours before bed, mimicking its natural release time, as studies show it’s generally safe and can gently push your circadian rhythm towards sleep.

12. Listen to Your Body’s Sleep Cues

Go to sleep the moment you feel drowsy, even if it’s earlier than your usual bedtime, as listening to your body’s natural sleepiness cues helps maintain a healthy sleep pattern.

13. Maintain Sleep Schedule Consistency

Strive for a consistent sleep pattern because your brain is a habitual machine that thrives on regularity, but allow for occasional flexibility for social events without fretting, as your body is adaptive.

14. Restrict Evening Liquids

Refrain from consuming liquids closer to bedtime, especially as you get older, to reduce the likelihood of waking up at night to urinate, which can fragment sleep.

15. Assess Napping Habits

Evaluate your napping habits: if naps make you feel refreshed and don’t disrupt nighttime sleep, they can be beneficial; however, if you nap due to accidental drowsiness or comorbidities, it may indicate underlying issues.