Do you really know?
Episodes
Why are young people looking so old?
11 May 2026
Contributed by Lukas
If you're aged between 30 and 40, you're part of Generation Y, also known as the ‘millennials’ You may have already said to yourself that the next...
Why doesn’t every language have a word for blue?
11 May 2026
Contributed by Lukas
Our planet is full of blue things. The sea, the sky. Blueberries, bluebirds, bluebells. If English is your only language, it’s probably inconceivabl...
What is muscle dysmorphia?
11 May 2026
Contributed by Lukas
It's back to school! DYRK is dedicating a special week to sport. Because moving and doing regular physical activity is important for our physical and ...
Does money really make us happy?
10 May 2026
Contributed by Lukas
According to a 2014 study by the Pew Research Center, people in wealthier countries are happier on average, but only up to a point. Even in so-called ...
How do you explain intuition?
10 May 2026
Contributed by Lukas
We've all experienced those gut feelings, hunches, or flashes of insight that seem to come from nowhere. But what exactly is intuition, and can it be ...
What is digital sobriety?
10 May 2026
Contributed by Lukas
Digital sobriety is all about reducing the ecological footprint of our daily digital lifestyles. That’s right, using your cell phone, PC or connecte...
Can we really multitask effectively?
09 May 2026
Contributed by Lukas
It's pretty common these days to have to tackle several things at once, like responding to an email while on a work call. Our constant pursuit of prod...
Should we all be working a 4 day week?
09 May 2026
Contributed by Lukas
One of the unsuspected consequences of a global pandemic is a re-evaluation not only of how we work but what work means to us. For some the flexibili...
What is sexsomnia?
09 May 2026
Contributed by Lukas
We all know someone who talks in their sleep, or occasionally sleepwalks around the house, perhaps even heading to the kitchen to prepare a nighttime ...
What is Focus Friday?
08 May 2026
Contributed by Lukas
Let's be honest: being productive at work on Fridays can be a real challenge. A 2019 study by Accountemps found that Friday was the least common choic...
How can you stop giving in to impulse buying?
08 May 2026
Contributed by Lukas
Have you ever picked up clothes or random items on a whim, because you were stressed, bored, or just felt like celebrating? That’s what experts ca...
What is the soft evening concept from Tiktok?
08 May 2026
Contributed by Lukas
Do you ever feel frustrated about work dominating your life? Maybe in your free time, you try to make up for that by enjoying yourself and having a bu...
Why do we get great ideas in the shower?
07 May 2026
Contributed by Lukas
Have you ever noticed that you tend to have your best ideas in the shower? If so, you’re not alone! A 2014 study conducted by cognitive psychologist...
What are the dangers of overusing paracetamol?
07 May 2026
Contributed by Lukas
Paracetamol, a staple in UK households, is widely available over the counter and commonly used to alleviate headaches, toothaches, joint pain, flu sym...
What is the keto diet?
07 May 2026
Contributed by Lukas
What is the keto diet? The ketogenic diet is a high-fat, low-carb diet which allegedly helps weight loss and fighting diseases such as diabetes, epil...
What is astropsychology?
06 May 2026
Contributed by Lukas
Regular listeners will remember how astrology has undergone somewhat of a revival in recent years. Knowledge of terms like “Saturn return” and “...
What are pick me boys?
06 May 2026
Contributed by Lukas
Self-deprecation can be an endearing trait in some people. After all, it’s important not to take oneself too seriously, isn’t it? But when pick me...
Are micro naps actually effective?
06 May 2026
Contributed by Lukas
After lunch, many of us get that familiar afternoon slump, an overwhelming urge to just doze off for a little while. And on weekends or during holida...
What was the Nazis' Madagascar Plan?
05 May 2026
Contributed by Lukas
When we talk about the Holocaust, most of us immediately think of death camps like Auschwitz or Dachau, chilling symbols of the Nazis’ “Final Solu...
Does stress really cause grey hair?
05 May 2026
Contributed by Lukas
We’ve all heard the saying, "This is giving me grey hair!" But is there any truth to it? Actually, yes. Several scientific studies confirm that st...
How can I limit the effects of sugar on my health?
05 May 2026
Contributed by Lukas
When we think of those who have high blood sugar, we tend to think of people with diabetes, as they often have to monitor their levels and sometimes u...
Why are there more cancer deaths than ever before?
04 May 2026
Contributed by Lukas
It’s not something we like to dwell on too often, but the chance for each of us getting some kind of cancer during our lifetime is significant. Afte...
Why do mouth sounds drive some people crazy?
04 May 2026
Contributed by Lukas
Let’s face it there are certain sounds that are just annoying to be exposed to, or sometimes even to think of! Someone chewing loudly with their mou...
Is oversleeping bad for you?
04 May 2026
Contributed by Lukas
You’re no doubt familiar with what it feels like to be extremely tired after a long sleep. It’s a little like a hangover really: sluggishness, irr...
Does true crime help us fall asleep?
03 May 2026
Contributed by Lukas
For some, true-crime stories have a strangely calming effect when they are tucked up in bed for the night. It’s a phenomenon that’s not gone unnot...
Could SMART goals help you reduce stress?
03 May 2026
Contributed by Lukas
All personal development coaches emphasise the importance of setting goals, even ones that may seem out of reach at first. Doing so not only boosts mo...
Why is black associated with grief?
03 May 2026
Contributed by Lukas
A funeral is one of those rare occasions where you don’t really need to think too much about your choice of outfit. After all, everyone wears black ...
Is cracking my knuckles bad for me?
02 May 2026
Contributed by Lukas
If you’re asking yourself whether cracking your knuckles is a bad thing, we'll take it as a given that you do crack your knuckles. You’ve probably...
How often should I cut my hair?
02 May 2026
Contributed by Lukas
For some, a trip to the hairdresser feels like a chore, while for others, it’s a refreshing boost. Either way, getting regular haircuts isn’t just...
What is polycystic ovary syndrome?
02 May 2026
Contributed by Lukas
Polycystic ovary syndrome, also called PCOS, is related to hormonal imbalances in women’s bodies. It’s the leading cause of fertility problems in ...
Why is it so hard to disobey?
01 May 2026
Contributed by Lukas
Picture this: your boss asks you to do something that feels unfair or pointless. You disagree… but you go along with it anyway. It happens all the...
Why do we hiccup?
01 May 2026
Contributed by Lukas
Of all the involuntary spasms the human body has, hiccuping is one of the most peculiar. Sure, it’s funny at first, and in particular if it’s happ...
Has the mystery of the Bermuda Triangle finally been solved?
01 May 2026
Contributed by Lukas
Every year, an average of four planes and twenty boats vanish in this notorious area. Straddling the line between legend and reality, the Bermuda Tr...
Are protein bars really worthwhile?
30 Apr 2026
Contributed by Lukas
If you are looking for a quick and easy way to boost your protein intake, you might have considered eating a protein bar. They are convenient, come in...
Why do our bodies need to sleep?
30 Apr 2026
Contributed by Lukas
Sleep is often seen as a waste of time. Many businessmen, politicians, and celebrities boast about sleeping only 5 hours per night or even being insom...
How can you boost your morale in just 8 minutes?
30 Apr 2026
Contributed by Lukas
Modern life moves fast—work, responsibilities, and that endless to-do list. It often feels like there’s no time for what truly matters. Relationsh...
Why did Tiktok ban the "legging legs" trend ?
29 Apr 2026
Contributed by Lukas
Social media just can't seem to shake off its obsession with thinness! Despite knowing that what we see online isn't always real, it still manages to ...
What are five foods that make us happy?
29 Apr 2026
Contributed by Lukas
When you’re feeling a little blue, eating to feel better can be an appealing proposition. But the reality is we often turn to junk food or sugary tr...
Will the meat of the future be printed in 3D?
29 Apr 2026
Contributed by Lukas
Climatologists and medical experts are in agreement about the detrimental impact of excessive meat consumption on both our environment and health. Ind...
Why do some people need to sleep more than others?
28 Apr 2026
Contributed by Lukas
As the years go by, we're getting less and less sleep. A survey by Chemist4U in 2022 found that Brits get just 6 hours and 10 minutes of sleep per nig...
How can you use Tinder safely?
28 Apr 2026
Contributed by Lukas
Salim Berrada, also known as "the Tinder rapist", has been on trial in France since 18 March 2024. He is accused of raping or sexually assaulting 17 w...
What are the health benefits of using sex toys?
28 Apr 2026
Contributed by Lukas
We've long known that masturbation can help relieve stress and even alleviate menstrual pain in women, thanks to the release of hormones like endorphi...
What is anticipatory grief?
27 Apr 2026
Contributed by Lukas
At some point in life, most people experience grief, whether after losing a loved one or at the end of an important relationship. We tend to associate...
How do I know if I'm addicted to sex?
27 Apr 2026
Contributed by Lukas
Hypersexuality, overactive libido and sex addiction are just a few of many terms used to describe those who simply can’t seem to get enough when it ...
Which foods will help you get a good night's sleep?
27 Apr 2026
Contributed by Lukas
Here at Do You Really Know, we’ve talked over and over again about the importance of getting good quality sleep. So of course, you don’t want your...
Could job enrichment make your work more rewarding?
26 Apr 2026
Contributed by Lukas
A lot has changed in the workplace since the onset of the Covid-19 pandemic in 2020. Companies have had to figure out how to best manage remote work f...
What do I need to know before getting a tattoo?
26 Apr 2026
Contributed by Lukas
A 2022 YouGov study suggested that 26% of British people have at least one tattoo, a statistic which reflects just how the perception of tattoos has c...
Why do we talk about “left” and “right” in politics?
26 Apr 2026
Contributed by Lukas
Today, “left” and “right” are the main labels we use to categorise political views, but their origins go back over two centuries. To understan...
What is the 10-3-2-1-0 Method for Better Sleep?
25 Apr 2026
Contributed by Lukas
The pursuit of restful sleep is a common goal, especially considering that around one-third of people in the UK experience sleep disorders such as in...
Can you have sex on your period?
25 Apr 2026
Contributed by Lukas
Getting intimate while you or your partner are menstruating isn’t always straightforward. Still, the idea of period sex has gradually become less an...
How can I optimise my interior through Ikea hacking?
25 Apr 2026
Contributed by Lukas
Ever since Covid-19 lockdowns, many people have developed a taste for interior design and regularly take to Pinterest for inspiration. But as you may ...
How did running a marathon become a status symbol?
24 Apr 2026
Contributed by Lukas
The London Marathon takes place this Sunday, with more than 50,000 runners set to take part. Simply getting hold of a bib is hard enough, with a worl...
Why do we get moles?
24 Apr 2026
Contributed by Lukas
The number of moles we have on our bodies largely depends on sun exposure. According to the Mayo Clinic, “Most people have 10 to 45 moles that appea...
What is cookie jarring in the dating world?
24 Apr 2026
Contributed by Lukas
Do you have an ex who seems to always get back in touch whenever they’re feeling lonely and have no one else in their sights? Or how about this: ...
Is scratching a mole really dangerous?
23 Apr 2026
Contributed by Lukas
Moles can be flat, raised, discreet, or visible. They appear all over our skin and tend to increase in number over time. While these harmless little s...
What's the warm, fuzzy feeling we get when moved by love?
23 Apr 2026
Contributed by Lukas
Have you ever been deeply moved when experiencing or witnessing a moment of powerful human connection? It might be the unexpected urge to hug a strang...
What is omotenashi, the Japanese art of hospitality?
23 Apr 2026
Contributed by Lukas
In some cultures, being well at home is all about making sure that others feel well when visiting, by welcoming them in the right way. In Japan, for e...
Is eating bread actually bad for you?
22 Apr 2026
Contributed by Lukas
Bread has been a staple of the human diet for over 10,000 years, when our ancestors made flatbread by baking a mixture of flour and water in the sun. ...
Why do we startle when we fall asleep?
22 Apr 2026
Contributed by Lukas
You're peacefully drifting off to sleep when suddenly you feel as if you're falling into a void and you startle awake. This rather unpleasant sensatio...
What is the best way to soothe a crying baby?
22 Apr 2026
Contributed by Lukas
Getting babies to sleep is big business, and a major source of stress for parents. There are many theories and methods: rock them, sing, let them cry ...
Why are young people going back to flip phones?
21 Apr 2026
Contributed by Lukas
Flip phones or ‘dumb’ phones as they are sometimes called are making a comeback but you might be surprised to know that it's gen Z, in other words...
Which cooking method is the healthiest?
21 Apr 2026
Contributed by Lukas
Cooking not only destroys bacteria and germs but also makes food more digestible, especially meat. It changes the taste, appearance, color, and mos...
Is a white tongue unhealthy?
21 Apr 2026
Contributed by Lukas
A white coating on the tongue can occur when your health is compromised, like during a cold or fever. Lifestyle factors such as smoking, excessive alc...
How do you get better results with ChatGPT ?
21 Apr 2026
Contributed by Lukas
Artificial intelligence has become a cornerstone of modern life, and since ChatGPT's launch in November 2022, its popularity has skyrocketed. A 2024 Y...
Why do our tastes change with age?
20 Apr 2026
Contributed by Lukas
Have you ever avoided a type of food for a long time, assuming you hated it, only to try it out and then end up having something of a revelation? Thi...
Could wanderlove give you more dating options?
20 Apr 2026
Contributed by Lukas
According to the most recent figures from the Association of British Travel Agents, the number of people going on holidays alone has soared over the ...
Why are so many young people suffering from financial dysmorphia?
19 Apr 2026
Contributed by Lukas
When we hear the term dysmorphia, most of us think about body image, the gap between what we see in the mirror and reality. We’ve talked about Snapc...
Why do we change our hairstyle when we’re depressed?
19 Apr 2026
Contributed by Lukas
Our hair says a lot about our personalities —it’s a core part of our identity. It reflects who we are and how we want the world to perceive us. A...
What's the best alarm to wake up to?
19 Apr 2026
Contributed by Lukas
Did you know that the alarm clock actually serves a greater purpose than simply rousing us from sleep? Whether it's the buzz of your smartphone, a bre...
Could you be micro-flirting without realising it?
18 Apr 2026
Contributed by Lukas
There are plenty of ways to get the attention of someone you're crushing on. It might come very naturally to some, but for others, flirting can be an ...
What are the secrets of a successful LAT couple?
18 Apr 2026
Contributed by Lukas
The idea might seem inconceivable to some, but these days more and more people are choosing to be in LAT relationships. The LAT part of the term stand...
How can I beat my work addiction?
18 Apr 2026
Contributed by Lukas
Being a grafter or hustler is often portrayed in a positive light when it comes to the world of work. But there are a host of negative consequences th...
What is the cocktail party effect?
17 Apr 2026
Contributed by Lukas
Imagine you're at a noisy party. People are everywhere: overlapping conversations, clinking glasses, a constant buzz of sound. And yet, in the middle ...
What are the strangest reactions caused by an orgasm?
17 Apr 2026
Contributed by Lukas
Having an orgasm triggers a cascade of physiological responses, including the tightening of muscles in the pelvic and genital regions, and the release...
What is hobby dating?
17 Apr 2026
Contributed by Lukas
Perhaps you've already experienced that awkward feeling on a first date when you don't really know what to say to each other. Having a drink or going ...
Why are some people constantly sexually aroused?
16 Apr 2026
Contributed by Lukas
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...
How small is a micropenis?
16 Apr 2026
Contributed by Lukas
Penis size is often wrongly linked to notions of masculinity, and it’s an issue that causes a lot of insecurity among many men. Now, the term microp...
What's the happiest country in the world?
16 Apr 2026
Contributed by Lukas
The latest edition of the annual World Happiness Report has been released, offering a fascinating insight into global well-being. Compiled by the Gall...
Could Highlander syndrome help humans become immortal?
15 Apr 2026
Contributed by Lukas
Humans have long been intrigued by the idea of achieving eternal life, and wondered whether it could ever become possible thanks to medical and techno...
What threat does the Year 2038 problem pose to our computers?
15 Apr 2026
Contributed by Lukas
Millennials - how well, if at all, do you remember the Y2K bug hype? Back in the 1990s, everyone was freaking out about computers crashing when the cl...
Why do doctors advise against chewing gum?
15 Apr 2026
Contributed by Lukas
Chewing gum first appeared in the United Kingdom in the year 1911, when AMerican manufacturer William Wrigley founded a British subsidiary. And it’s...
What is quiet hiring?
14 Apr 2026
Contributed by Lukas
After the emergence of ‘quiet quitting’, it's now the turn of quiet hiring. And although the term is relatively new, the practice is not. The ter...
Are my smart devices spying on me?
14 Apr 2026
Contributed by Lukas
Smart devices can be very handy, but increasingly people are worried about exactly how smart they are, what they know and what they are doing with our...
How can you avoid bed bugs when you travel?
14 Apr 2026
Contributed by Lukas
Bed bugs are small, blood-sucking insects that can infest your luggage, clothing, bedding and furniture. They are not only a nuisance, but can also ca...
How can I beat Monday morning syndrome?
13 Apr 2026
Contributed by Lukas
As the sun sets on this rainy Sunday evening, reality sinks in. You didn't quite muster the energy to venture out, and now it's back to the grindstone...
How can I beat my fear of flying?
13 Apr 2026
Contributed by Lukas
Have you ever had a holiday coming up, and rather than being excited about it, you just can’t get over the apprehension and anxiety you get when you...
Is taking milk with coffee good for you?
13 Apr 2026
Contributed by Lukas
Coffee purists tend to look down on the likes of the latte, cappuccino and mocha, suggesting that only black coffee is the real deal. They often dou...
How does doom spending stop us from saving money?
12 Apr 2026
Contributed by Lukas
Members of Gen Z, when you were kids, you might well have had grand plans for your twenties – owning a house, landing a job, getting hitched, and ha...
Why do men often wake up with an erection?
12 Apr 2026
Contributed by Lukas
A lot of people think that morning erections are triggered by erotic dreams, or a need to pee, but in fact they're a physiological reflex linked to sl...
How did broccoli freckles become a beauty trend?
12 Apr 2026
Contributed by Lukas
Anyone who uses Tiktok knows that you can stumble across some pretty random stuff on there. I mean, all of us have our own algorithm-tailored For You ...
What is King Charles’ role in the Church of England?
11 Apr 2026
Contributed by Lukas
Following the death of Queen Elizabeth II in September 2022, her son Prince Charles became King at the age of 73. He inherited the many titles that hi...
Why is Noah syndrome so dangerous?
11 Apr 2026
Contributed by Lukas
April 2024 saw a couple in the south of France handed a one-year suspended sentence, and a ban from having pets, after they were discovered keeping 15...
How quick is premature ejaculation?
11 Apr 2026
Contributed by Lukas
According to the British Association of Urinological Surgeons, somewhere between 20 and 30% of men experience premature ejaculation. But of those men,...
Is it really a good idea to exercise on an empty stomach?
10 Apr 2026
Contributed by Lukas
You might have heard that working out before eating helps burn more fat. It’s a common claim. Some say a fasted workout, like heading out for a ...
Could the 6-1 method help you save money on groceries?
10 Apr 2026
Contributed by Lukas
As of March 2024, the UK inflation rate stood at 3.2%, well below the record levels that had been seen a year prior. But still the cost of living cris...
Where does our phobia of clowns come from?
10 Apr 2026
Contributed by Lukas
Clowns are supposed to make you laugh, but often can make you shudder. What is supposed to be a figure of fun is for many the stuff of nightmares. Cou...
Why are famous women being targeted by transvestigations?
09 Apr 2026
Contributed by Lukas
What do Serena Williams, Beyoncé, Henry Cavill, Ryan Gosling and Nicole Kidman all have in common? Well apart from being famous, they’ve all been t...
How can I improve my sense of direction?
09 Apr 2026
Contributed by Lukas
Many of us feel completely disoriented at times, and are afraid of getting lost, whether in the middle of the city, in the forest, when travelling or ...
Why are brownouts getting more and more common in the work world?
09 Apr 2026
Contributed by Lukas
Research by productivity software provider Asana showed that 70% of knowledge workers experienced burnout in 2021. Now we’ve talked about the sympto...
How often should you wash your jeans?
08 Apr 2026
Contributed by Lukas
It’s a common habit to toss our jeans into the laundry after a single wear, but is that really necessary? Turns out, giving your denim a break from ...