Do you really know?

According to a Direct Line Group study from 2022, over 70% of UK adults don’t get the recommended 7-9 hours of sleep per night. Nighttime micro-awakenings are a common contributing problem. For many of us, they happen four to six times per night without us even noticing. And they usually just mark the end of a sleep cycle. But they’re more common in some people, and can be down to various factors...

We all know that getting over romantic relationships can take time, sometimes weeks, months or years. Many poems, songs and film scenes have been dedicated to expressing the pain of dealing with such situations. But friendship heartbreaks don’t tend to get so much attention, even though they can hurt as much, or even more! Well one of the main things is that there’s a template for ending a romanti...

Nearly one in three adults in the UK experiences symptoms of insomnia. On average, adults in the UK get about 7.6 hours of sleep per night. In recent years, the popularity of gadgets designed to track and improve sleep has surged. However, this growing focus on achieving perfect sleep has given rise to a new issue: orthosomnia. Smartwatches, fitness trackers, and more advanced gadgets like connect...

We talk about sleep needs a lot on Do You Really Know, so regular listeners will be well aware that we need 7-9 hours each day, and that not getting enough can lead to negative health impacts. Regardless of who you are, when you get less than seven hours of sleep, you start accumulating what’s known as sleep debt or sleep deficit. The Sleep Foundation defines it as: “the difference between the amo...

Throughout history people have been keen to find the answer to immortality. It's now commonly accepted that eternal life is not possible. Yet, somewhere deep in the ocean, a tiny fingernail-sized creature nicknamed the “immortal jellyfish” might be able to cast new light on the human aging process. A new study published in August 2022 in the Proceedings of the National Academy of Sciences shows th...

The feeling of hunger can be difficult to explain sometimes, especially if you feel like you've eaten as much as you usually do. As a result, we often end up either snacking or putting up with a rumbling tummy for hours on end. Even if we manage to resist snacking, the risk is that when it gets to meal time we end up eating twice as much as usual! Feelings of hunger can also lead to a drop in ener...

Although it is quite usual to find insects in markets in both Africa and Asia it is rather more unusual for people in the West to eat them. However, with increased awareness of animal welfare and environmental concerns around eating meat people are beginning to think more seriously about insects as food rather than something to be swatted. The problem is that a lot of people find eating bugs prett...

You’ve no doubt heard that certain foods can increase desire, or even improve sexual performance. Oysters, ginger, chocolate and strawberries are just a few examples of foods that supposedly have that magical effect. They’re labelled aphrodisiacs, a word which comes from the name of Aphrodite, the Greek goddess of love. There are very few scientific studies out there to back that belief up. In peo...

When it comes to expressions about skin, the English language is not lacking. For example, we can be thick or thin skinned, or have someone under our skin. To show indifference, we say “it’s no skin off” our noses, and when we get excited we “jump out of” our skin.  The sheer number of different idioms reflects the deep links the skin has with our brains. Sometimes these links are visible and give...

You may know Hugh Jackman as the star of X-Men, The Greatest Showman, and Les Misérables, but did you know that he has a secret to success that involves working less, not more? That’s right, Hugh Jackman follows the 85% rule, an unofficial guide to life that says we should try hard at things, but not too hard. In other words, we should aim to work at 85% of our capacity, rather than 100%. But why...

The condition we’re going to talk about today is pretty rare. It affects around 1% of women, but it can really disrupt the lives of those who suffer from it. Persistent genital arousal disorder, or PGAD for short, was officially identified by the medical community back in 2001, when Sandra Leiblum and Sharon Nathan published an article about it in The Journal of Sex and Marital Therapy. At the tim...

It may be a little taboo to talk about it, but there are a lot of people out there who, for a variety of reasons, don’t have as much sex as they would like, or arguably need. And there’s actually a form of therapy out there which is specifically designed to help people become more comfortable with sex and intimacy. The idea of sex surrogacy started catching on in Europe in the 2000s, and these day...

Let’s be honest; who among us doesn’t daydream about having saving money effortlessly? The new year period is often synonymous with ambitious resolutions, but let's face it: they can be tough to stick to, especially when it comes to money.  The hard part isn’t only having enough money coming in to set some aside; being organised enough to do is also a challenge. So let’s introduce a simple and qui...

A small chocolate bar. A tablespoon of honey. A hummingbird. Those are a few different things that weigh around 21g. And you can add the human soul to that list, according to the 21 grams experiment from the early 20th century. That’s right; while there’s no scientific evidence that the soul even exists, a theory emerged not only suggesting that it does, but also putting its weight at the figure o...

If you drink alcohol, the chances are that on occasion you’ve overdone it and drunk way more than you planned to. Or maybe you decided to let yourself have a big night out, even though you know you’d have to deal with a pounding headache the next morning. Well, to make things worse, that hangover often comes hand in hand with overwhelming feelings of shame and regret about what you might have said...

A lazy girl job is an easy, enjoyable and well-paid job that doesn’t require much passion or effort, and leaves you with plenty of time to live your life outside of work. It might sound too good to be true but some TikTokers have been posting videos of themselves bragging about their lazy girl jobs, such as working from home, answering emails, or doing administrative tasks and the hashtag #lazygir...

According to UK government data, a total of 6.5 billion passenger journeys were completed using public transport vehicles like buses, trains and tram systems, in the year to March 2023.  Packed platforms, overcrowded carriages and uncertain schedules are just some of the issues public transport commuters have to deal with on a regular basis, not to mention the occasional strike. Being crammed into...

The last week or so has seen temperatures reach around 20° in the south of England, and you can expect to see similar temperatures for the next month or so as we head into summer. Whenever the weather warms up, there’s always a temptation to try to mask any odours or stains that are coming from our sweaty bodies, but it’s worth bearing in mind that sweating is actually a crucial bodily function. D...

Social media has been part of our daily digital lives for nearly two decades now, and while there are plenty of positives associated with it, there’s also an undeniably dark side. Recent years have brought to light the sometimes traumatic work experience of social media moderators who have to review content that’s flagged as potentially harmful or offensive. Back in 2018, German directors Hans Blo...

How our brains work during dreams is as fascinating as it is mysterious. Dreams can be hard to predict, and sometimes of course we end up having nightmares. Wouldn’t it be nice to have some control over what happens in our dreams? Well, as it turns out it may actually be possible to some extent. Well controlling dreams fully is a bit of a stretch. But according to neuroscience researchers from the...

Whether it’s out of necessity or for enjoyment, lubricant helps a lot of people in their sex lives. According to The Cleveland Clinic: “Around 17% of people assigned female at birth (AFAB) age 18 to 50 report problems with vaginal dryness during sex, even before menopause takes place.” And that figure increases to 50% after menopause. There are a number of factors that can contribute to insufficie...

Think back to the story of Peter Pan, and more specifically the character of Wendy Darling, Peter’s friend who accompanies him to Neverland. She’s the eldest and most mature of the Darling siblings, and acts as a mother figure to Peter too. You could definitely describe her as caring, nurturing, responsible and self-sacrificing. Well those may sound like totally positive characteristics, but there...

Perfume is a luxury product worn by people all around the world, but fragrances are not without health risks. Perfumes use a mix of chemicals, some are natural, such as essential oils from plants, but many of them are synthetic, meaning they are created in a laboratory. The problem is that the perfume industry is not very transparent about what goes into their products. They can hide hundreds of i...

According to Whatsapp, over 7 billion voice notes are sent on the app every day. A lot of the time, they offer a more personal touch and clearer explanations than text messages. But not everyone is a fan.  Tech journalist Victoria Turk published an article on the Huffington Post in 2019 under the headline “Can We All Agree That WhatsApp Voice Notes Are Terrible?”, while in 2023 Women’s Health Mag...

Despite its many benefits, sex can also bring on a bit of stress at times. You feel like you have to fit into a certain mould. Have sex often enough, but not too much or you might seem overly fixated. Don't lose your virginity too early, but don't wait too long either. Even sexual performance is expected to meet certain standards. Ultimately, sex, which is supposed to be one of the most intimate a...