Feeling Sleepy? Have a Nap. It's Good For you!

Here's a very valid case to have a power nap. Experts say an after-lunch snooze is good for you and your productivity.

If you’ve ever felt the need to rest your head on your work desk to secretly get a few minutes of post-lunch shut-eye while the boss wasn’t watching, it turns out you’re not lazy or disinterested. In fact, you are very normal.

According to Moira Junge, sleep psychologist and member of the Sleep Health Foundation, we were designed to require an afternoon kip to get through the day.

“We are all pre-programmed to need a little nap in the afternoon, explains Junge. “What happens with our body’s sleep mechanisms is that we have a post-lunch dip in our system and have a propensity to sleep.”

Junge explains the ‘post-lunch dip’ in our 24-hour circadian rhythm is like a sleepy switch that just flicks on in the afternoon. It’s independent of what we eat and of the amount we’ve slept the night before. This dip also gets repeated at night around 11pm and is the reason why some of us ‘crash out’ around that time.

“We are all pre-programmed to need a little nap in the afternoon. What happens with our body’s sleep mechanisms is that we have a post-lunch dip in our system and have a propensity to sleep.”

But, says Junge, what’s unique about this afternoon napping signal is that it’s temporary. It lasts 30 minutes to 1.5 hours before we go back to feeling alert again.

“If you don’t get an opportunity for sleep, say if you are at work, you can cycle through this dip quickly as your body’s systems will rise again, with or without a sleep if you can just manage to stay awake through it.”

Professor Leon Lack from the School of Psychology at Flinders University is pro-power napping and says if we can, we should. He reminds me that our need to nap in the afternoon is the reason why siestas are an accepted practice in many countries and explains that napping is a natural human habit dating back hundreds of years.

“We’ve become so fixed in our cultural habits of having a single nighttime sleep,” Prof Lack tells SBS. “This idea is a reasonably recent cultural adaptation from the industrial revolution and because of the advent of electric lights.

“Over 300 years ago, when most people were rural farmers, you probably had naps in the middle of the day and stayed up a little later at night but only so long as the fires burned in your house.”

So let’s say one day, our workplaces radically changed to become pro-napping zones. How long a kip should we have on our desk before the alarm rings? Junge says the trick is for the nap to be very short: 20 minutes is ideal, with time dedicated for you to fall asleep.

“If you sleep more than 20 minutes, you get into that deep slow wave of sleep where you can’t hear anything or wake up and don’t know where you are,” says Junge.

“That’s because the first 20 minutes of sleep are very light, stage one and two of sleep, and if you sleep for longer, you are more likely to have sleep inertia, where you wake up and feel worse or take a long time to ‘wake up’ and get going. Longer naps might also affect your sleepiness and ability to sleep at night. So short, sharp naps are recommended.”

Prof Lack goes even further to suggest that the average adult should be having 10 minute power naps in the afternoon, as needed, with a few minutes added to fall asleep.

He co-conducted research in 2006 comparing no naps with naps of five, 10, 20 and 30 minute durations. The 10-minute adult nap gave participants the biggest rise in alertness with the minimal amount of post-nap grogginess.

“With the 20 and 30 minutes sleeps, performance was impaired a little bit immediately after waking up for the first half hour or so,” says Prof Lack. “But the 10 minute naps produced significant benefits in cognitive performance.”

"Stop the struggle and have a quick kip so you can be more productive at work for the rest of the day.”

The moral of this dreamy story, Prof Lack suggests, is that if someone is really struggling with sleepiness in the afternoon, it’s likely they will continue on struggling for up to 90 minutes until they come out of ‘that dip’.

“So managers should find out what’s better for the worker. Is it better for them to be below par at work for 1.5 hours [during their afternoon dip] and potentially make mistakes? Or allow them 15 minutes – five minutes to relax and fall asleep and 10 minutes of napping – to increase the productivity for the remainder of that 1.5 hours?

“Napping could be considered beneficial if you are struggling with sleepiness in the day, commonly in afternoon and have a decline in alertness. Stop the struggle and have a quick kip so you can be more productive at work for the rest of the day.”

Both experts stress that this advice is general and that sleep needs vary according to individual needs and circumstances. They recommend that people with sleep disorders consult a GP and, if needed, see a sleep specialist.

This article originally appeared on sbs.com.au and was written by Yasmin Noone

Gut Microbiota: How it Affects Your Mood, Sleep and Stress Levels

The gut microbiota is the community of bugs, including bacteria, that live in our intestine. It has been called the body’s “forgotten organ” because of the important role it plays beyond digestion and metabolism.

You might have read about the importance of a healthy gut microbiota for a healthy brain. Links have been made between the microbiota and depression, anxiety and stress. Your gut bacteria may even affect how well you sleep.

But it can be difficult to work out exactly how far the science has come in this emerging field of research. So what evidence is there that your gut microbiota affects your brain?

How does your gut talk to your brain?

When you’re healthy, bacteria are kept safely inside your gut. For the most part, the bacteria and your gut live in harmony. (The gut has been known to nurture or even control the behaviour of the bacteria for your well-being.)

So how do the bacteria get their signal out?

The best evidence is that the normal channels of communication from your gut are being hijacked by the bacteria.

The gut has a bidirectional relationship with the central nervous system, referred to as the “gut-brain axis”. This allows the gut to send and receive signals to and from the brain.

A recent study found that the addition of a “good” strain of the bacteria lactobacillus (which is also found in yoghurt) to the gut of normal mice reduced their anxiety levels. The effect was blocked after cutting the vagus nerve – the main connection between brain and gut. This suggests the gut-brain axis is being used by bacteria to affect the brain.

This link was clarified in a study where bacterial metabolites (by-products) from fibre digestion were found to increase the levels of the gut hormone and neurotransmitter, serotonin. Serotonin can activate the vagus, suggesting one way your gut bacteria might be linked with your brain.

There are many other ways gut bacteria might affect your brain, including via bacterial toxins and metabolites, nutrient-scavenging, changing your taste-receptors and stirring up your immune system.

A recent study found that the addition of a “good” strain of the bacteria lactobacillus (which is also found in yoghurt) to the gut of normal mice reduced their anxiety levels.

How can the gut affect your mental health?

Two human studies looked at people with major depression and found that bacteria in their faeces differed from healthy volunteers. But it’s not yet clear why there is a difference, or even what counts as a “normal” gut microbiota.

In mouse studies, changes to the gut bacteria from antibiotics, probiotics (live bacteria) or specific breeding techniques are associated with anxious and depressive behaviours. These behaviours can be “transferred” from one mouse to another after a faecal microbiota transplant.

Even more intriguingly, in a study this year, gut microbiota samples from people with major depression were used to colonise bacteria-free rats. These rats went on to show behavioural changes related to depression.

Stress is also likely to be important in gut microbiota and mental health. We’ve known for a long time that stress contributes to the onset of mental illness. We are now discovering bidirectional links between stress and the microbiota.

In rat pups, exposure to a stressor (being separated from their mums) changes their gut microbiota, their stress response, and their behaviour. Probiotics containing “good” strains of bacteria can reduce their stress behaviours.

How gut microbiota affects your mood

Medical conditions associated with changes in mood, such as irritable bowel syndrome (IBS) and chronic fatigue syndrome (CFS), might also be related to gut microbiota.

IBS is considered a “gut-brain disorder”, since it is often worsened by stress. Half of IBS sufferers also have difficulties with depression or anxiety.

Ongoing research is investigating whether gut bacteria are one reason for the mood symptoms in IBS, as well as the gastrointestinal pain, diarrhoea and constipation.

Similarly, CFS is a multi-system illness, with many patients experiencing unbalanced gut microbiota. In these patients, alterations in the gut microbiota may contribute to the development of symptoms such as depression, neurocognitive impairments (affecting memory, thought and communication), pain and sleep disturbance.

In a recent study, higher levels of lactobacillus were associated with poorer mood in CFS participants. Some improvements in sleep and mood were observed when patients used antibiotic treatment to reduce gut microbial imbalance.

The exact contributions of stress and other factors such as intestinal permeability (which allows nutrients to pass through the gut) to these disorders are not understood. But the downstream effects seem to be involved in IBS, inflammatory bowel conditions, CFS, depression and chronic pain.

How our gut affects our sleep

Our mental health is closely linked to the quality and timing of our sleep. Now evidence suggests that the gut microbiota can influence sleep quality and sleep-wake cycles (our circadian rhythm).

A study this year examined patients with CFS. The researchers found that higher levels of the “bad” clostridium bacteria were associated with an increased likelihood of sleep problems and fatigue, but this was specific to females only. This suggests that an unbalanced gut may precipitate or perpetuate sleep problems.

There is emerging evidence that circadian rhythms regulate the gut immune response. The effect of immune cells on the biological clock could provide insights into the possible bidirectional relationship between sleep and the gut. For example, data from animal studies suggests that circadian misalignment can lead to an unbalanced gut microbiota. But this effect can be moderated by diet.

There is growing concern that disruptions to our circadian timing of sleep leads to a range of health issues, such as obesity, metabolic and inflammatory disease, and mood disorders. This is particularly important for shiftworkers and others who experience changes to their sleep/wake patterns.

For example, data from animal studies suggests that circadian misalignment can lead to an unbalanced gut microbiota. But this effect can be moderated by diet. 

What this means for treatment

In terms of using interventions directed at the gut to treat brain disorders – so called “psychobiotics” – there is a lot of promise but little clear evidence.

Probiotic (live bacteria) treatments in mice have been shown to reduce cortisol, an important stress hormone, and decrease anxious and depressive behaviours.

But there are very few studies in humans. A recent systematic review of all the human studies showed the majority do not show any effect of probiotics on mood, stress or symptoms of mental illness.

On the plus side, large studies show us that people who eat a balanced diet with all the usual good stuff (fibre, fresh fruit and vegetables) have lower rates of mental illness as adults and adolescents.

Clearly, diet affects both the gut microbiota and mental health. Research is ongoing to see whether it is a healthy gut microbiota that underlies this relationship.

A healthy gut microbiota is linked to a healthy brain. However there are only a handful of human studies demonstrating real-world relevance of this link to mental health outcomes.

There is still a way to go before we can say exactly how best to harness the microbiota in order to improve brain function and mental health.

This article originally appeared on The Source and was written by By 

Paul Bertrand, RMIT University, Amy Loughman, RMIT University, Melinda Jackson, RMIT University

Are Trigger Points Affecting Your Athletic Performance?

Trigger points cause real problems for athletes.

Not only are trigger points exquisitely painful, but they also affect movement. Trigger points inhibit range of motion by keeping muscles short and stiff. They also weaken muscles, causing them to tire quickly and recover slowly. They produce excessive muscle contraction that can partially disarticulate joints or cause nerve entrapment.

That’s the bad news: Trigger points can seriously inhibit athletic performance. The good news? Acupuncture can help. So can self-care (see tips at the end of this article!).

How does a trigger point form?

A trigger point is a hyper-irritable muscle band with a predictable pattern of pain referral. It forms when the process of muscle contraction and release goes awry.

Muscle overload or trauma causes the muscle band to contract too strongly. Such excessive contracture increases metabolic demand and also squeezes shut the network of capillaries supplying the nutrition and oxygen to the region.

This results in a local energy crisis, perpetuating the cycle of contracture. The muscle band cannot release and a trigger point forms.

Can stretching relieve trigger points?

A muscle harboring a trigger point will be too painful to stretch fully. The pain (and subsequent inhibitory reflex) will prevent you from sufficiently lengthening the muscle band.

What’s more, forcing a stretch will often result in injury (muscle strain) and do nothing to resolve the trigger point.

Think of a trigger point like a knot in a rubber band. Stretching the band will cause it to snap, but it will not release the knot. To restore full stretch to that rubber band, you first need to unwind the knot.

Acupuncture is the most effective way to release trigger points

The acupuncture needle provides a mechanical disruption to the trigger point. It halts the vicious cycle of energy crisis in the muscle. Restored to its full length, the muscle recovers its normal blood supply and metabolism, and it can function fully.

You might be wondering, does having acupuncture on trigger points hurt?

Many release techniques require direct pressure to the trigger point, which is by definition painful. Often a trigger point is too irritable to tolerate much additional mechanical stimulation. But a needle can reach the depth of the trigger point without irritating the hyper-sensitive tissues above or around it. There is simply no other technique that can boast such precision.

And acupuncture achieves immediate results. A single well-placed needle into a trigger point will elicit a twitch followed by reduced muscular tension and increased range of motion. Such immediate feedback is immensely satisfying for someone who has been dealing with pain and dysfunction in that muscle for weeks, months, or even years.

3 self-care tips for preventing trigger points

Increase training loads slowly

Trigger points form due to persistent muscular contraction, strain, or overuse. To prevent their formation, don’t do too much too soon—and make sure you have adequate recovery between workouts. Get enough quality sleep to ensure your body can repair itself efficiently.

Maintain range of motion and muscle balance

This requires some work. Regularly take your body through the opposite range of motion you use in your sport. A good rule of thumb is to lengthen the agonist, and strengthen the antagonist.

For cyclists who spend hours in the saddle with forward shoulder posture, this means increasing range of motion in your pectorals, and strengthening the rhomboids and other muscles of the upper back. Runners typically benefit from lengthening the hip flexors (psoas and quadriceps) and strengthening the hip extensors (glutes and hamstrings).

Break up adhesions

You need to be doing something on a regular basis to normalize tight, overworked muscle tissue.

Supple, flexible muscles don’t get injured. Using a lacrosse ball, a foam roller, or even your fingers, apply direct pressure to a tight muscle band for 8-12 seconds. Taking the muscle through its range of motion while compressing it will break up adhesions before a trigger point forms.

This article originally appeared on Acutake and was written by Ginna Ellis.

Acupuncture Benefits Sleep, Reduces Stress

Acupuncture successfully improves sleep quality and reduces both stress and depression in the elderly. Published in Neuroscience Letters, researchers made this determination based on a randomized, placebo-controlled study. The researchers note that “the rigorous methodology employed in this study ensured the reliability of the results concerning the improved sleep quality and relaxation effects involved with acupuncture during aging.” 

Acupuncture significantly improved the Pittsburg sleep quality index (PSQI) scores, indicating substantial sleep quality improvements. In addition, beck depression inventory (BDI) and the perceived stress scale (PSS) measures demonstrated significant clinical improvements. True acupuncture demonstrated significant positive patient outcomes for improvements in sleep quality and reduction of both depression and stress. The researchers note, “No significant changes were observed in the placebo group.” The researchers add that the strict controls employed during the study “demonstrate the real effects of acupuncture.”

Acupuncture was applied to elderly patients in a hospital outpatient setting. Licensed acupuncturists applied the acupuncture needles while patients rested in a supine position on a stretcher. Acupuncture was applied at a rate of twice per week for a total of 25 minutes of needle retention time per treatment session. Each patient received a grand total of 10 acupuncture treatments. Sterile disposable acupuncture needles were applied to acupuncture points:

• SP6 (Sanyinjiao)
• LI4 (Hegu)
• ST36 (Zusanli)
• LV3 (Taichong)
• PC6 (Neiguan)
• Ex-NH3 (Yintang)

Manual needle stimulation was applied to the needles frequently during each acupuncture treatment session. For the placebo-controlled sham acupuncture group, acupuncture needles were applied to areas of the body not associated with classic acupuncture points as defined by Traditional Chinese Medicine (TCM). In addition, the placebo-controlled group’s needles were applied to a superficial depth without needle stimulation.

The acupuncture point prescription choice was similar to a prescription in a related study. The researchers note that Sun et al. used acupuncture points including ST36, SP6, PC6, and LV3 in an investigation of acupuncture’s effects on major depressive disorder (MDD). The researchers note that Sun et al. “found similar antidepressant effects of electroacupuncture (EA) as compared to fluoxetine-treated patients.” Fluoxetine is a selective serotonin reuptake inhibitor (SSRI) antidepressant medication. It is also known by its trade names including Prozac and Sarafem.

The researchers add that electroacupuncture “had a faster onset of action, better response rate, and better improvement rate than fluoxetine, indicating that acupuncture can be a good intervention method for ameliorating psychological distress and depressive symptoms, thereby promoting relaxation and well-being.” Although there were similarities to Sun et al., the sleep researchers employed manual acupuncture stimulation whereas Sun et al. employed electroacupuncture. This contrast demonstrates that both electroacupuncture and manual acupuncture have therapeutic value in the treatment of depression. 

The researchers note that additional studies are required to investigate the effects of acupuncture on the process of immunosenescence, the process of immune system of deterioration due to aging. 

They cite research demonstrating that “adequate sleep helps fight infection and improves immunity after vaccinations” and “increased sleep duration was associated with increased number of circulating immune cells.” The current study demonstrates that acupuncture benefits sleep in the elderly. This suggests potential benefits to overall immune system function. As a result, the researchers call for studies to investigate the impact of acupuncture on immunity in the elderly.


For more information:
http://www.healthcmi.com/Acupuncture-Continuing-Education-News/1439-acupuncture-benefits-sleep-reduces-stress