20 Sleep Myths Debunked

Could sleep myths be affecting people’s sleep quality? New research from Villanova University suggests that they might. In a study involving 1,120 adults, participants were surveyed to assess their belief in false statements about sleep. Surprisingly, the study found that many people endorsed these sleep myths, with 10 out of 20 false statements being endorsed by at least 50 percent of the participants.

The consequences of believing in these sleep myths were significant. Those with higher scores for sleep myth beliefs demonstrated inconsistent bedtimes, more frequent napping, engaged in activities in bed that are incompatible with good sleep hygiene, and perceived few negative consequences of insufficient sleep.

Let’s take a closer look at some of these myths and why they are misleading:

Myth #1: Being able to fall asleep “anytime, anywhere” is a sign of a healthy sleep system.

Reality: It can indicate sleep deprivation or sleep apnea.

Myth #2: Most adults need only 5 or fewer hours of sleep for general health.

Reality: Getting less than 5 hours of sleep is linked to various health problems.

Myth #3: Your brain and body can learn to function just as well with less sleep.

Reality: Continued sleep deprivation leads to decreased performance.

Myth #4: Adults sleep more as they get older.

Reality: Older adults often get less sleep than younger individuals.

Myth #5: If you can get it, more sleep is always better.

Reality: Oversleeping, usually defined as consistently sleeping more than 9 hours a night, can lead to issues like increased inflammation, obesity risk, and cognitive decline if done as a habit. These negative effects can also be amplified by a sedentary lifestyle. However, it must be emphasised that optimal sleep duration varies from person to person. 

Myth #6: One night of sleep deprivation will have lasting negative health consequences.

Reality: While short-term sleep deprivation can often be fixed with a good night’s rest, chronic sleep deprivation can lead to lasting health issues like heart disease and obesity. Prioritising regular, healthy sleep patterns is crucial to avoiding these long-term health problems.

Myth #7: In terms of your health, it doesn’t matter what time of day you sleep.

Reality: Disrupted circadian rhythms from nighttime work can lead to health issues.

Myth #8: Lying in bed with your eyes shut is almost as good as sleeping.

Reality: Wakefulness and deep sleep have distinct physiological differences.

Myth #9: If you have difficulty falling asleep, it’s best to stay in bed and try to fall back to sleep.

Reality: Stimulus control therapy, such as leaving the bed until tired, can help with insomnia.

Myth #10: Although annoying for bed partners, loud snoring is mostly harmless.

Reality: Snoring can be a sign of obstructive sleep apnea.

Myth #11: A sound sleeper rarely moves at night.

Reality: Occasional movement is normal during sleep, but chronic movement could indicate a sleep problem.

Myth #12: Hitting snooze when you wake up is better than getting up when the alarm first goes off.

Reality: Fragmented sleep from snoozing can lead to decreased mental flexibility and mood.

Myth #13: If you’re having difficulties sleeping at night, taking a nap in the afternoon is a good way to get adequate sleep.

Reality: Napping can disrupt your sleep-wake cycle and exacerbate insomnia.

Myth #14: Alcohol before bed will improve your sleep.

Reality: Alcohol before bed may aid initial sleep, but it can disrupt the second half of the night, causing more awakenings and affecting overall sleep quality. You can read more about this in this blog post. 

Myth #15: For sleeping, it’s better to have a warmer bedroom than a cooler bedroom.

Reality: Warm environments are associated with worse sleep; cooler bedrooms are generally better.

Myth #16: Boredom can make you sleepy even if you got adequate sleep beforehand.

Reality: Boredom may reveal underlying sleepiness and inadequate sleep.

Myth #17: Watching television in bed is a good way to relax before sleep.

Reality: Watching TV before bedtime can increase arousal and hinder sleep.

Myth #18: Exercising within 4 hours of bedtime will disturb your sleep.

Reality: Late-night exercise (1-2 hours before bedtime) can make falling asleep harder for some as adrenaline and heart rate become elevated. However, it is no secret that regular exercise improves overall sleep quality. Hence, find a routine that works for you; if late workouts affect sleep, consider exercising earlier in the day to balance fitness and restful sleep.

Myth #19: During sleep, the brain is not active.

Reality: Based on brain wave activity, there seems to be plenty going on inside our heads.

Myth #20: Remembering your dreams is a sign of a good night’s sleep.

Reality: Longer sleep duration, not dream recall, is associated with better sleep.

These are just a few of the sleep myths that people commonly believe. It’s essential to address these misconceptions as they can influence individuals’ sleep behaviours and habits. While some of these myths might have a grain of truth for specific individuals, the key is to tailor sleep practices to what works best for you. Remember, sleep is a vital component of overall well-being, and dispelling these myths can lead to healthier sleep habits and, consequently, improved health.

References:

http://dx.doi.org/10.1016/j.sleh.2021.10.004 

http://dx.doi.org/10.1016/j.sleh.2019.02.002 

Want a Healthier Heart? Ask: How Often Should I Move?

You’ve probably heard the phrase “Sitting is the new smoking” quite a bit. Although it might slightly sensationalise the issue, it holds some truth. In reality, any level of movement surpasses the absence of it, and, for most people, increasing their physical activity yields better results.

A recent study, conducted by scientists at Columbia University, unveiled an uncomplicated yet efficient approach to enhancing heart health: “exercise snacks.” These consist of brief bursts of physical activity, such as five minutes of walking every half hour. The researchers discovered that integrating these “exercise snacks” into your daily routine can substantially reduce the risk of heart disease and other chronic ailments.

But before you assume it’s a miraculous solution, let’s delve into the study’s intricacies to better comprehend the researchers’ findings.

Background

Our contemporary sedentary lifestyles, characterised by prolonged hours at desks or in front of screens, have been correlated with cardiovascular diseases and elevated mortality rates. Although studies have underscored the advantages of taking breaks from sitting, the precise frequency and duration of these breaks remain ambiguous.

The World Health Organization’s 2020 Physical Activity Guidelines acknowledged the need to clarify this matter to facilitate the inclusion of more physical activity into people’s everyday lives. Columbia University’s researchers embarked on this mission.

The Study

The study encompassed eleven adults aged 45 and older, mandated to spend eight hours seated in ergonomic chairs over five separate days. Consequently, they were only permitted to stand up for bathroom breaks or scheduled “exercise snacks.”

Throughout the study, participants underwent various conditions, randomly allocated, with a minimum of four days between each:

    • Continuous sitting (the control group)
    • Light-intensity walking every 30 minutes for 1 minute.
    • Light-intensity walking every 30 minutes for 5 minutes
    • Light-intensity walking every 60 minutes for 1 minute
    • Light-intensity walking every 60 minutes for 5 minutes

The walking sessions transpired on a treadmill, set to a leisurely pace of 2.0 mph, equivalent to a very slow stroll. The researchers gauged vital cardiovascular health indicators, encompassing blood sugar and blood pressure, fatigue, mood, and cognitive performance.

Study Findings

In comparison to continuous sitting for eight hours, blood sugar levels substantially decreased when participants engaged in the “every 30 minutes for 5 minutes” exercise snack. Intriguingly, none of the other exercise patterns resulted in a significant reduction in blood sugar.

Regarding blood pressure, all forms of exercise snacks led to a statistically significant drop in systolic measurements compared to uninterrupted sitting. The most pronounced reductions in systolic blood pressure were evident in the “every 60 minutes for 1 minute” exercise snack (-5.2 mmHg) and the “every 30 minutes for 5 minutes” exercise snack (-4.3 mmHg).

Fatigue levels diminished with all exercise snacks, except for the “every 60 minutes for 1 minute” break. The most considerable reductions in fatigue were reported after the “every 30 minutes for 5 minutes” and “every 60 minutes for 5 minutes” exercise snacks.

In summary, introducing a 5-minute walking break every 30 minutes appeared to be the most effective in enhancing various health markers. Nonetheless, it is crucial to acknowledge that this study featured a limited sample size; thus, its findings offer valuable insights but remain inconclusive.

Key Takeaways:

  • Blood Pressure Benefits: The study’s outcomes imply that these exercise snacks could substantially influence blood pressure. This holds significance as aerobic exercise is frequently recommended as an initial hypertension treatment.
  • Prioritise Movement: Importantly, any form of movement surpasses prolonged sitting. Many individuals may underestimate the extent of their daily sedentary routines. Therefore, we recommend tracking activity levels for a week, either manually or with a fitness tracker, to heighten awareness and stimulate increased activity.

In summary, integrating short, regular bursts of movement into your daily schedule can be a pragmatic and effective approach to enhancing heart health and overall well-being. Remember, progress matters more than perfection.

References:

http://dx.doi.org/10.1249/MSS.0000000000003109

http://dx.doi.org/10.1136/bjsports-2020-102955

French Fries vs. Almonds: A Surprising 30-Day Study

For 30 days, a group of lucky participants got to enjoy a daily serving of French fries. Sounds like a dream, right? But this was no ordinary feast; it was a scientific experiment conducted by researchers from the University of Alabama-Birmingham. The goal? To test a fascinating hypothesis: would there be any difference in fat gain between those who added 300 calories of French fries to their daily diet compared to those who added 300 calories of almonds? Let’s dig into this study to uncover the results.

Background

Observational studies have suggested a link between potato consumption, especially in the form of French fries and chips, and weight gain. However, these studies show correlation, not causation, leaving room for speculation. One possibility is that people who consume more potatoes might lead overall unhealthier lifestyles or have a tendency to overeat in general. Researchers acknowledge the limitations of such studies and cite a meta-analysis that indicates people tend to gain less weight than expected when they add energy (in the form of a specific food) to their diet. The theory is that individuals compensate for the extra calories by adjusting their behaviors.

The Study

This study was a randomised, controlled trial that involved 165 participants with an average age of 30 and an average BMI of 26. The majority (68%) were female, and none had type 1 or type 2 diabetes. Participants were divided into three groups:

  • Group #1: Almonds (the control group)
  • Group #2: French fries
  • Group #3: French fries with herb/spice mix

Each group was instructed to consume a pre-packaged, 300-calorie serving of their assigned food daily, with no other dietary modification instructions provided. Group #3 received an additional herb/spice mix to determine if it influenced the results. The researchers aimed to examine whether the herb/spice mix would affect how the participants’ bodies processed the calories.

Study Findings

The study found no significant differences in changes in fat mass between the groups. There were also no notable differences in body weight between the almond group and the French fries with the herb/spice mix group.

However, the group that consumed regular French fries (without the herb/spice mix) did experience a statistically different change in body weight compared to both the almond group and the herb/spice mix group.

Key Points to Consider

  • Short-Term Study: It’s crucial to note that this study was relatively short-term. While it measured changes in fat mass and body weight, it couldn’t assess the long-term health impact of such dietary changes over years or decades.
  • Lack of Monitoring: The researchers couldn’t monitor participants’ actual food intake or adherence to the dietary instructions. Whether participants followed the instructions precisely and consistently for 30 days remains unknown, making the differences in body weight less conclusive.
  • Potential Conflicts of Interest: The study received partial support from the Alliance for Potato Research and Education and included food donations from J.R. Simplot Company. Additionally, some of the researchers had received funding from the Almond Board and the Alliance for Potato Research and Education. While these factors were disclosed and didn’t affect the study’s methodology, they’re essential to consider when interpreting the results.

What You Can Learn from This Study

  1. Food Choices Matter: While the study suggests that adding 300 calories of French fries may not lead to more fat gain than the same calories from almonds, remember that the type of food you choose matters in your overall diet. Some foods are more satisfying and better for weight management than others.
  2. Nutrient-Rich Potatoes: Potatoes, including French fries, have nutritional benefits. They contain resistant starch and dietary fibre, which can make you feel full and support your digestive health. Plus, they provide essential vitamins and minerals.
  3. Plain Potatoes are Satisfying: Research has shown that plain-boiled potatoes are quite filling. They rank high on the “Satiety Index,” meaning they can help you feel satisfied with your meal. However, it’s often the toppings and additions like salt, oil, butter, and sour cream that contribute extra calories and may lead to weight gain.
  4. Consider Your Overall Diet: When making food choices, think about your entire diet and how different foods fit into it. It’s not just about one meal, but how your daily food choices align with your health and fitness goals.

In conclusion, this study offers insights into short-term effects, but remember that the bigger picture of your diet and individual preferences is vital for long-term health and weight management. As you make food choices, focus on balance and sustainability to achieve your health and fitness objectives.

Rejection Sensitivity: Does It Affect Our Relationship with Food?

The echoes of childhood experiences often reverberate throughout our lives, shaping our perceptions, behaviours, and even our relationship with food. Memories of being teased or rejected based on appearance can leave lasting imprints, influencing how we approach nutrition and health. This phenomenon is closely tied to rejection sensitivity, a personality trait that has significant implications for our eating habits and overall well-being. In this article, we delve into the intriguing connection between rejection sensitivity and disordered eating behaviours, as unveiled by a recent study conducted by researchers at McGill University.

The Study’s Exploration

The researchers at McGill University embarked on a quest to uncover the intricate relationship between rejection sensitivity and our attitudes towards food. Their hypothesis revolved around the idea that individuals who fear rejection may be more prone to experiencing interpersonal stress. This stress, arising from social conflicts, bullying, or ostracism, could trigger extreme responses concerning food, such as binge eating or strict dietary restrictions, as a way of coping.

To test their hypothesis, the scientists engaged two groups of females in a series of questionnaires. These surveys aimed to uncover:

  • Participants’ feelings about rejection
  • Their encounters with ostracism and bullying
  • Their perspectives on eating, body weight, and shape
  • Their height and weight measurements

The Study’s Revelations

The study’s findings unveiled compelling insights into the connection between rejection sensitivity and disordered eating. Surprisingly, it wasn’t interpersonal stress that acted as the primary link between rejection sensitivity and disordered eating. Instead, rejection sensitivity demonstrated a direct association with concerns about body weight and shape, as well as binge eating.

In essence, the fear of rejection or the perception of rejection, regardless of whether it’s rooted in reality, can significantly contribute to disordered eating patterns. Intriguingly, individuals with high rejection sensitivity might develop eating issues as a means of self-preservation, attempting to shield themselves from potential interpersonal issues rather than using these behaviours as a response to stress.

Key Takeaways for Your Journey

  • Food Issues Reach Beyond Nutrition: Your relationship with food isn’t solely about what’s on your plate. It’s a complex interplay of your life experiences, your unique personality, the people around you, and how you perceive yourself. These elements not only determine what and how much you eat but also shape your emotional connection with food.
  • Navigating Relationship Challenges: If you find yourself in the midst of relationship turmoil or battling feelings of isolation, it’s essential to be mindful of how this can impact your eating habits. Emotional struggles can lead to unhealthy relationships with food, so it’s crucial to stay vigilant and seek support if needed.
  • Empowering Your Journey: Boosting your self-esteem can be a powerful tool in overcoming rejection sensitivity and its effects on your eating behaviours. While therapists are experts in this area, you can kickstart this process by building self-awareness. Consider exploring techniques like cognitive behavioral therapy, art therapy, mindfulness, and meditation. These initial steps can pave the way for a healthier relationship with food and yourself.

In conclusion, the enlightening study from McGill University highlights the profound influence of rejection sensitivity on our eating behaviours. It serves as a reminder that our connection with food runs deep, intertwined with our past experiences and emotions. As you embark on your personal journey towards healthier eating habits, remember that it’s not just about what’s on your plate but also about nurturing a positive relationship with food and yourself.

References:
https://www.sciencedirect.com/science/article/abs/pii/S0195666323001216

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