What do you imagine a good night’s sleep to be?

Often when people come into our sleep clinic seeking treatment, they share ideas about healthy sleep.

Many think when their head hits the pillow, they should fall into a deep and restorative sleep, and emerge after about eight hours feeling refreshed. They’re in good company – many Australians hold the same belief.

In reality, healthy sleep is cyclic across the night, as you move in and out of the different stages of sleep, often waking up several times. Some people remember one or more of these awakenings, others do not. Let’s consider what a healthy night’s sleep looks like.

Sleep cycles are a roller-coaster

As an adult, our sleep moves through different cycles and brief awakenings during the night. Sleep cycles last roughly 90 minutes each.

We typically start the night with lighter sleep, before moving into deeper sleep stages, and rising again into rapid eye movement (REM) sleep – the stage of sleep often linked to vivid dreaming.

If sleeping well, we get most of our deep sleep in the first half of the night, with REM sleep more common in the second half of the night.

Adults usually move through five or six sleep cycles in a night, and it is entirely normal to wake up briefly at the end of each one. That means we might be waking up five times during the night. This can increase with older age and still be healthy. If you’re not remembering these awakenings that’s OK – they can be quite brief.

What does getting a ‘good’ sleep actually mean?

You’ll often hear that adults need between seven and nine hours of sleep per night. But good sleep is about more than the number of hours – it’s also about the quality.

For most people, sleeping well means being able to fall asleep soon after getting into bed (within around 30 minutes), sleeping without waking up for long periods, and waking feeling rested and ready for the day.

You shouldn’t be feeling excessively sleepy during the day, especially if you’re regularly getting at least seven hours of refreshing sleep a night (this is a rough rule of thumb).

But are you noticing you’re feeling physically tired, needing to nap regularly and still not feeling refreshed? It may be worthwhile touching base with your general practitioner, as there a range of possible reasons.

Common issues

Sleep disorders are common. Up to 25% of adults have insomnia, a sleep disorder where it may be hard to fall or stay asleep, or you may wake earlier in the morning than you’d like.

Rates of common sleep disorders such as insomnia and sleep apnoea – where your breathing can partially or completely stop many times during the night – also increase with age, affecting 20% of early adults and 40% of people in middle age. There are effective treatments, so asking for help is important.

Beyond sleep disorders, our sleep can also be disrupted by chronic health conditions – such as pain – and by certain medications.

There can also be other reasons we’re not sleeping well. Some of us are woken by children, pets or traffic noise during the night. These “forced awakenings” mean we may find it harder to get up in the morning, take longer to leave bed and feel less satisfied with our sleep. For some people, night awakenings may have no clear cause.

A good way to tell if these awakenings are a problem for you is by thinking about how they affect you. When they cause feelings of frustration or worry, or are impacting how we feel and function during the day, it might be a sign to seek some help.

We also may struggle to get up in the morning. This could be for a range of reasons, including not sleeping long enough, going to bed or waking up at irregular times – or even your own internal clock, which can influence the time your body prefers to sleep.

If you’re regularly struggling to get up for work or family needs, it can be an indication you may need to seek help. Some of these factors can be explored with a sleep psychologist if they are causing concern.

Can my smart watch help?

It is important to remember sleep-tracking devices can vary in accuracy for looking at the different sleep stages. While they can give a rough estimate, they are not a perfect measure.

In-laboratory polysomnography, or PSG, is the best standard measure to examine your sleep stages. A PSG examines breathing, oxygen saturation, brain waves and heart rate during sleep.

Rather than closely examining nightly data (including sleep stages) from a sleep tracker, it may be more helpful to look at the patterns of your sleep (bed and wake times) over time.

Understanding your sleep patterns may help identify and adjust behaviours that negatively impact your sleep, such as your bedtime routine and sleeping environment.

And if you find viewing your sleep data is making you feel worried about your sleep, this may not be useful for you. Most importantly, if you are concerned it is important to discuss it with your GP who can refer you to the appropriate specialist sleep health provider.

Amy Reynolds, Associate Professor in Clinical Sleep Health, Flinders University; Claire Dunbar, Research Associate, Sleep Health, Flinders University; Gorica Micic, Postdoctoral Research Fellow, Clinical Psychologist, Flinders University; Hannah Scott, Research Fellow in Sleep Health, Flinders University, and Nicole Lovato, Associate Professor, Adelaide Institute for Sleep Health, Flinders University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The holiday season can be a time of joy, celebration, and indulgence in delicious foods and meals. However, for many, it can also be an emotional and stressful period.

This stress can manifest in our eating habits, leading to what is known as emotional or stress eating.

There are certain foods we tend to eat more of when we’re stressed, and these can affect our health. What’s more, our food choices can influence our stress levels and make us feel worse. Here’s how.

Why we might eat more when stressed

The human stress response is a complex signalling network across the body and brain. Our nervous system then responds to physical and psychological events to maintain our health. Our stress response – which can be subtle or trigger a fight-or-flight response – is essential and part of daily life.

The stress response increases production of the hormones cortisol and insulin and the release of glucose (blood sugars) and brain chemicals to meet demand. Eating when we experience stress is a normal behaviour to meet a spike in energy needs.

But sometimes our relationship with food becomes strained in response to different types of stress. We might attach shame or guilt to overeating. And anxiety or insecurity can mean some people under-eat in stressful times.

Over time, people can start to associate eating with negative emotions – such as anger, sadness, fear or worry. This link can create behavioural cycles of emotional eating. “Emotional eaters” may go on to develop altered brain responses to the sight or smell of food.

What stress eating can do to the body

Stress eating can include binge eating, grazing, eating late at night, eating quickly or eating past the feeling of fullness. It can also involve craving or eating foods we don’t normally choose. For example, stressed people often reach for ultra-processed foods. While eating these foods is not necessarily a sign of stress, having them can activate the reward system in our brain to alleviate stress and create a pattern.

Short-term stress eating, such as across the holiday period, can lead to symptoms such as acid reflux and poor sleep – particularly when combined with drinking alcohol.

In the longer term, stress eating can lead to weight gain and obesity, increasing the risks of cancer, heart diseases and diabetes.

While stress eating may help reduce stress in the moment, long-term stress eating is linked with an increase in depressive symptoms and poor mental health.

What we eat can make us more or less stressed

The foods we choose can also influence our stress levels.

Diets high in refined carbohydrates and sugar (such as sugary drinks, sweets, crackers, cakes and most chocolates) can make blood sugar levels spike and then crash.

Diets high in unhealthy saturated and trans fats (processed foods, animal fats and commercially fried foods) can increase inflammatory responses.

Rapid changes in blood sugar and inflammation can increase anxiety and can change our mood.

Meanwhile, certain foods can improve the balance of neurotransmitters in the brain that regulate stress and mood.

Omega-3 fatty acids, found in fish and flaxseeds, are known to reduce inflammation and support brain health. Magnesium, found in leafy greens and nuts, helps regulate cortisol levels and the body’s stress response.

Vitamin Bs, found in whole grains, nuts, seeds, beans and animal products (mostly B12), help maintain a healthy nervous system and energy metabolism, improving mood and cognitive performance.

5 tips for the holiday table and beyond

Food is a big part of the festive season, and treating yourself to delicious treats can be part of the fun. Here are some tips for enjoying festive foods, while avoiding stress eating:

1. slow down: be mindful about the speed of your eating. Slow down, chew food well and put down your utensils after each bite

2. watch the clock: even if you’re eating more food than you normally would, sticking to the same timing of eating can help maintain your body’s response to the food. If you normally have an eight-hour eating window (the time between your first meal and last meal of the day) then stick to this even if you’re eating more

3. continue other health behaviours: even if we are eating more food or different food during the festive season, try to keep up other healthy behaviours, such as sleep and exercise

4. stay hydrated: make sure to drink plenty of fluids, especially water. This helps our body function and can help with feelings of hunger. When our brain gets the message something has entered the stomach (what we drink) this can provide a temporary reduction in feelings of hunger

5. don’t restrict: if we have a big day of eating, it can be tempting to restrict eating in the days before or after. But it is never a good idea to overly constrain food intake. It can lead to more overeating and worsen stress.

Plus 3 bonus tips to manage holiday stress

1. shift your thinking: try reframing festive stress. Instead of viewing it as “something bad”, see it as “providing the energy” to reach your goals, such as a family gathering or present shopping

2. be kind to yourself and others: practise an act of compassion for someone else or try talking to yourself as you would a friend. These actions can stimulate our brains and improve wellbeing

3. do something enjoyable: being absorbed in enjoyable activities – such as crafting, movement or even breathing exercises – can help our brains and bodies to return to a more relaxed state, feel steady and connected.

For support and more information about eating disorders, contact the Butterfly Foundation on 1800 33 4673 or Kids Helpline on 1800 551 800. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14. In an emergency, call 000.

Saman Khalesi, Senior Lecturer and Discipline Lead in Nutrition, School of Health, Medical and Applied Sciences, CQUniversity Australia; Charlotte Gupta, Senior Postdoctoral Research Fellow, Appleton Institute, HealthWise research group, CQUniversity Australia, and Talitha Best, Professor of Psychology, NeuroHealth Lab, Appleton Institute, CQUniversity Australia

This article is republished from The Conversation under a Creative Commons license. Read the original article.