Something You Should Know

You can spend $5 on a bottle of wine—or $5,000. But is one really that much better than the other? Or could something else be shaping what you taste in that glass? Researchers have taken a closer look—and what they found is surprising. https://www.pnas.org/doi/10.1073/pnas.0706929105

Sibling relationships are some of the longest and most influential connections we have—yet they can be loving, distant, competitive, or even nonexistent. Why do siblings raised in the same home often grow up to be so different? Does birth order really shape personality? And what causes some siblin...

Apologizing seems like the obvious thing to do when you’ve done something wrong. It’s supposed to make things right—and make you feel better. But interestingly, there’s something else that can feel even better than saying “I’m sorry”… and many people do it without even realizing why. https://www.npr.org/2013/04/01/175714511/why-not-apologizing-makes-you-feel-better

Every culture has superstitions—lucky charms, rituals, taboos, and beliefs that don’t seem to make logical sense. By definition, they’re irrational. So why do they persist? Why do otherwise rational people still avoid walking under ladders, knock on wood, or carry lucky objects...

You’ve heard it a thousand times: too much sugar is bad for you. But what does that actually mean? What is sugar really doing inside your body that makes it so harmful—and why is it so hard to cut back once you start? https://www.hsph.harvard.edu/nutritionsource/carbohydrates/added-sugar-in-the-diet/

What makes two people feel attracted to each other? Why does chemistry seem to spark instantly with some people but not at all with others? Is love at first sight real—or is something more subtle happening beneath the surface? Dr. Justin Garcia, evolutionary biolog...

Almost everyone has experienced déjà vu—that strange, fleeting feeling that what’s happening right now has somehow already happened before. It can be subtle or intensely vivid, sometimes even a little unsettling. For a moment, it feels like your brain is replaying reality. But is it just a glitch in memory… or something more?

Scientists have been trying to understand déjà vu for decades, and the answers are more fascinating than you might expect. Is it a sign your brain is working correctly—or a sign something is off? Why does it tend to happen in ce...

That eerie feeling that someone is watching you—even when no one is there—can be surprisingly convincing. It feels almost like a sixth sense. But where does that sensation come from, and can you actually trust it? https://pubmed.ncbi.nlm.nih.gov/10707330/

Color is everywhere, yet it’s surprisingly difficult to pin down. Are we all seeing the same colors—or just calling them by the same names? Why are some colors calming while others feel energizing or even unsettling? Kory Stamper, lexicographer and author of True Color: The Strange and Spectacular History of Defining Color—fr...

When you walk up to a table with a group of people, you probably pick a seat without thinking much about it. But where you sit can subtly shape how others perceive you and how the interaction unfolds. There’s actually a simple strategy to choosing a seat that can give you an advantage — whether the table is round, square, large, or small. https://lifehacker.com/always-choose-the-best-seat-at-any-multi-person-table-5990596

No matter how rational you try to be, your thinking is shaped by biases you can’t fully escape. These biases influence what you believe, the decisions you make, and even w...

No one enjoys being in a bad mood. But it turns out that feeling a little down may actually put your brain in a surprisingly useful state. In fact, certain kinds of thinking and decision-making may improve when you’re feeling a little low. https://www.unsw.edu.au/newsroom/news/2017/05/why-bad-moods-are-good-for-you--the-surprising-benefits-of-sadne

Could humans really live on another planet or is it just science fiction? We have already begun living beyond Earth—astronauts have spent decades aboard space stations. But what would it really take to live permanently on another planet? The challenges go far beyond rockets and...

Anxiety has become incredibly common. Many people feel constantly on edge—worried about work, relationships, money, the future, or simply the pace of modern life. The usual advice focuses on calming down, reducing stress, or trying to eliminate anxiety altogether. But Dr. John Delony believes that approach misses the point. Anxiety itself is not the real problem—it’s a signal. Like a smoke alarm going off in your house, the goal shouldn’t be to silence the alarm but to figure out what’s causing it. Dr. Delony argues that anxiety often points to deeper issues such as unresolved...

When you meet someone for the first time, you form an opinion about them almost instantly. Before they’ve said more than a few words, you may already feel they are trustworthy—or not. How do we make those snap judgments so quickly, and what exactly are we picking up on? https://www.princeton.edu/news/2006/08/22/snap-judgments-decide-faces-character-psychologist-finds

Are we really in control of our behavior, or do our genes quietly influence the choices we make? Scientists are discovering that genetics can shape traits such as impulsivity, aggression, and self-control—traits that can affect everything from everyday decisions to cri...

When you visit Disneyland or Disney World, something subtle happens in the parking lot both when you arrive and when you leave. Most people never notice it, yet it reflects a simple insight Walt Disney understood about human behavior — one that can make everyday experiences feel better and more memorable if you apply it in your own life. Source: Tom Peters author of The Little Big Things (https://amzn.to/4cmUMaZ).

We often talk about the “chemistry of love,” but the reality goes much deeper. Our attraction to others, the way relationships form, and even why love someti...

Junk mail seems like a relic of another era. Physical ads showing up in your mailbox feel easy to ignore in a world dominated by digital marketing. Yet companies still spend billions sending those mailers every year. Why? Because for certain groups of people, those pieces of mail are surprisingly effective — far more than you might expect. https://www.uspsoig.gov/sites/default/files/reports/2023-01/RISC-WP-20-009.pdf

Artificial intelligence is suddenly everywhere — writing emails, answering questions, summarizing documents, and even helping people make decisions. But should we trust it? Linguist Emily Bender, a professor at the...

Memory feels dependable — we rely on it to tell the story of our lives. But the truth is, memory behaves in some surprisingly strange ways. For one thing, your brain forgets far more than it remembers, and that’s not a flaw — it’s actually part of how memory is designed to work. At the same time, certain moments stick with remarkable clarity while others fade almost instantly. Think about how vividly many people remember events from their late teens and early adulthood compared with other periods of life.

So why do some experiences become unforgettable while others d...

When was the last time you sighed? Probably not that long ago. We tend to think of sighing as something we do when we’re frustrated, tired, or relieved. But scientists have discovered that sighing plays a much deeper role in keeping your body functioning properly — and your brain actually has a built-in mechanism that triggers it. https://newsroom.ucla.edu/releases/ucla-and-stanford-researchers-pinpoint-origin-of-sighing-reflex-in-the-brain

Some people naturally seem to expect things to work out, while others brace for disappointment. Is optimism simply a personality trait, or is it something you can learn? Psychologist Deepika Chopra — often called “The Optimism...

A simple trip to get your hair cut can instantly make you look years younger — and it may have little to do with the haircut itself. There’s a subtle psychological shift that happens in that moment that changes how people see you… and how you see yourself. https://www.youbeauty.com/beauty/psychology-of-hair/

At some point, everyone faces the question: Do I stay, or do I go? A job that feels off. A relationship that’s complicated. A place that no longer fits. But discomfort doesn’t always mean it’s time to leave — and comfort doesn’t always...

How you think about getting older might be more powerful than you realize. Scientists have uncovered an unexpected connection between people’s beliefs about aging and what happens to them as the years go by. https://pubmed.ncbi.nlm.nih.gov/12150226/

We’re often warned not to reveal too much about ourselves. Oversharing can make people uncomfortable, right? Maybe. But Harvard Business School professor Leslie John argues the bigger problem may actually be the opposite — sharing too little. In her book Revealing: The Underrated Power of Oversharing (https://amzn.to/3ME0EVt), she explains how thoughtfully sharing person...

We spend a surprising amount of mental energy agonizing over decisions that ultimately don’t matter very much — what to order at a restaurant, which email to answer first, or which option might be “slightly better.” Meanwhile, the truly important decisions in life often don’t get the thoughtful attention they deserve. Annie Duke says that’s because most people misunderstand how good decision making actually works. Annie is a former professional poker champion who now advises organizations and leaders on how to make smarter choices under uncertainty. She is also the author of How to Decide: Simple Tools for Making B...

The average American unknowingly throws away up to $1,500 a year — and it’s happening right in your own kitchen. It’s not obvious. It doesn’t feel wasteful in the moment. But small, everyday habits quietly drain real money from your grocery budget. There are a few surprisingly simple shifts that can stop the leak. https://www.usda.gov/foodlossandwaste/consumers

Your beliefs about yourself — your abilities, your limits, your future — quietly shape your behavior every day. “I’m too old.” “I’m bad with money.” “I’ll never succeed.” The problem is not that these statements are true — it’s that you belie...

Most of us have taken a hit to the head at some point — a fall, a collision, a stray ball — and brushed it off as no big deal. But what if those “minor” impacts aren’t so minor? Even seemingly harmless head injuries may have longer-term effects that we rarely consider. Source: Dr. Daniel Amen author of Change Your Brain, Change Your Life https://amzn.to/3P3Dtld

Every day you negotiate — at work, at home, with friends, with strangers. Most of us think conflict is something to avoid or win. But according to William Ury, one of the world...

Walk into a meeting room, classroom, or even your own living room, and chances are you’ll sit in the same spot you’ve chosen before. And if someone else is sitting there, it feels all wrong. But why? It’s a small behavior that reveals something surprisingly deep about how humans think. https://en.wikipedia.org/wiki/Place_attachment

Every night your brain builds an alternate reality — sometimes magical, sometimes terrifying, often completely illogical. So what are dreams actually for? Are they random noise, emotional therapy, memory maintenance, or something else entirely? Award-winning health and science journali...

What does it really mean to be happy? Even the happiest people aren’t happy all the time. Maybe happiness isn’t a constant emotion at all — maybe it’s a philosophy. A way of living. A sense of meaning shaped by what you do and who you do it for.

Stephanie Harrison has spent years studying what truly makes people happy — and she believes many of us have been chasing the wrong version. She is the creator of the “New Happy” philosophy, a powerful rethinking of happiness that has reached millions through art, a newsletter, a podcast, and p...

Sometimes a great idea doesn’t come from thinking harder — but from shifting your body. Research suggests that posture can influence how creatively and flexibly you think, meaning the position you’re in during a brainstorming session could actually affect whether you have that “Eureka!” moment. Listen to how that works as we open this episode. https://pubmed.ncbi.nlm.nih.gov/27992759

It feels like everyone has allergies these days. But do they really? And what exactly qualifies as an allergy in the first place? Dr. Zachary Rubin, a double board-certified pediatrician and allergist/immunologist in the Chicago ar...

Fresh flowers brighten any room — but they fade fast. You’ve probably heard all kinds of tricks to keep them alive longer: flower food packets, aspirin, sugar, even pennies in the vase. But there is one surprisingly simple additive that appears to work better than most, and it’s probably already in your kitchen. https://www.dailymail.co.uk/femail/article-12981249/

No matter how thrilling something feels at first — a new relationship, a promotion, a new gadget — the excitement fades. It has to. The brain is wired for habituation, meaning we quickly get used to what once thrilled u...

When men get sick with a cold or the flu, do they actually suffer more than women — or just complain louder? Some fascinating research suggests there may be real biological differences in immune response between the sexes, which could explain the infamous “man cold.” I break down what scientists have discovered and what it really means. https://pubmed.ncbi.nlm.nih.gov/29229663/

Picky eating feels normal today — separate meals for kids at the dinner table is often the norm. But it wasn’t always this way. For most of history, children ate what adults ate or they didn’t eat...

Thirty-six percent of Americans — including 61% of young adults and 51% of mothers with young children — say they experience “serious loneliness.” Nearly everyone has felt that ache at some point: the quiet sense of isolation, of being unseen or disconnected, even when surrounded by people. Humans are not wired for isolation. We are built for connection.

Yet modern life — with its screens, busyness, and fragmented communities — often pulls us further apart. Psychiatrist Dr. Edward Hallowell joins me to explain why loneliness is far more than a bad feeling. It impacts physical health, mental health, motivation, even lifespan. He shares why connecti...

On a freezing morning, it feels smart to let your car idle and warm up before driving off. But is it? Modern engines aren’t built the way they used to be. In fact, letting your car sit and idle too long may not be doing what you think it is. This episode begins with what actually happens under the hood — and how long you really should wait before you hit the gas and go. https://www.mensjournal.com/gear/stop-idling-like-its-1985-warm-up-your-car-right

There are few communication situations more intense than when a Secret Service agent speaks with some...

Body language sends signals we’re often unaware of — and apparently, that includes your belly button. Where it points can subtly communicate interest, attention, and even attraction. This episode begins with the surprising message your belly button may be sending — and what you might be picking up from others without realizing it. Source: Janine Driver author of You Say More Than You Think (https://amzn.to/3SPYVwt).

Have you ever eaten when you weren’t hungry… or kept eating even though you were already full — and then wondered why you did that? Most people assume it’s about willpower...

If you’re a coffee drinker, you’ve probably wondered at some point whether you’re drinking too much. Coffee gets blamed for everything from poor sleep to heart trouble — but a major long-term study tells a very different story. This episode begins with findings that may surprise (and reassure) coffee lovers. https://www.bmj.com/content/359/bmj.j5024

Eyeglasses are so common today that it’s easy to forget how revolutionary they are. Before glasses, millions of people were cut off from reading, learning, working, and fully participating in society. The invention of eyeglasses didn’t just improve...

Everyone seems more stressed than ever — and oddly, some people even wear it like a badge of honor. But chronic stress isn’t something to brag about. It quietly alters the way you think. It amplifies worry, exaggerates threats, narrows your options, and makes worst-case scenarios feel not just possible, but probable. Over time, stress doesn’t just affect your mood — it reshapes your perception, your judgment, and the decisions you make.

And because the shift happens gradually, you often don’t realize it’s happening at all.

Clinical psychologist Arthur Ciaramicoli has spent decades studying str...

When a big storm is on the way, it happens like clockwork: empty shelves, frantic shoppers, and a sudden shortage of eggs, bread, and milk. Why do people panic-buy the same items every time? And how much do you actually need if you’re stuck at home for a few days? This episode begins with the psychology behind panic shopping — and why otherwise rational people behave this way. https://www.psychologytoday.com/us/blog/happy-trails/201601/panic-shopping-the-psychology-of-the-bread-milk-eggs-rush

Most of us don’t think of ourselves as vulnerable. We assume danger happens to other people — until it doesn’t. In reality...

Are women really attracted to men who can make them laugh? And if so, why does humor matter so much in attraction? This episode begins with what research and relationship experts say about laughter, mating, and why being funny can be a powerful social signal. https://amzn.to/496hAtL

We’ve always been fascinated by twins. They seem mysterious, almost magical — as if they share a special connection the rest of us don’t. But do twins really experience the world differently, or are we projecting myths onto them? Helena de Bres joins me to unpack the truths...

Ask frequent flyers what bothers them most about air travel and you might be surprised by the answer. It’s not turbulence, cramped seats, or bad food — it’s the other passengers. This episode begins by revealing which behaviors irritate fellow travelers the most and what people wish would stop happening at 35,000 feet. https://pro.morningconsult.com/analysis/airplane-etiquette-annoying-behaviors

What brings two people together romantically has always been a mystery — and today, it’s more complicated than ever. Dating apps offer endless options, yet many people struggle to find meaningful connection. What actually predicts long-term attraction? What matters le...

Why would anyone need to be taught how to sleep, breathe, or drink water? Those are things you already do every day. And yet, it turns out most of us are doing them just wrong enough to undermine our health.

In this SYSK Trending episode, I talk with Michael Breus, one of the world’s leading sleep experts, about how small adjustments to when and how you sleep, breathe, and hydrate can produce outsized benefits for your energy, immunity, metabolism, and long-term health.

Dr. Breus is a double-board-certified clinical psychologist and sleep specialist, and the au...

We’ve all heard the “rules” about sleep — you need exactly eight hours, falling asleep in front of the TV is bad, and you can make up for lost sleep on the weekend. But how much of that is actually true? This episode begins by separating sleep myths from sleep reality — and the answers may surprise you. https://www.thehealthy.com/sleep/sleep-facts-myths/

When it comes to building wealth, complexity is often the enemy. Many financial experts agree that the simplest strategy — saving automatically before you ever see the money — is also one of the most powerful. But how does i...

Human touch feels good — but it may also do far more than we realize. From a reassuring hand on the shoulder to a long hug or massage, deliberate touch can trigger measurable biological responses in the body. This episode begins with what science reveals about why touch matters and what happens when we don’t get enough of it. https://www.psychologytoday.com/us/blog/everyone-top/202108/the-vital-importance-human-touch

It’s easy to assume that the big moments shape our lives — but what if tiny, seemingly meaningless choices matter just as much, or even more? A few minutes, a small de...

There’s an art — and a surprising amount of psychology — behind giving a great compliment. When done well, flattery can strengthen relationships, build trust, and make people more receptive. When done poorly, it can feel awkward or manipulative. This episode begins with what research says about how to give and receive compliments the right way. https://www.psychologytoday.com/us/blog/evidence-based-living/202109/the-psychology-compliments-nice-word-goes-long-way

Americans buy an astonishing amount of cheap stuff — souvenirs, knick-knacks, novelty items, gadgets — most of which quickly lose their appeal and end up forgotten in drawers or closets. Why are we so drawn to these thin...

SYSK TRENDING takes a look back at conversations from the Something You Should Know archive that connect directly to topics people are talking about right now.

Motivation is one of them.

We tend to think people are motivated by carrots and sticks — rewards if you do what’s expected, punishment if you don’t. And while that approach can work in some situations, research shows it’s often not the most effective way to motivate yourself or others.

Daniel Pink explains what actually drives human motivation and why autonomy, mastery, and purpose matter far more...

You’ve probably been told to be grateful for what you have — but that advice isn’t just feel-good wisdom. Research shows that intentionally expressing gratitude can actually change how your brain functions, influencing mood, focus, and emotional resilience. This episode begins with what gratitude really does inside your head — and why it’s more powerful than it sounds. https://www.thecut.com/2016/01/how-expressing-gratitude-change-your-brain.html

There’s a basic human need we rarely talk about, yet it quietly shapes how people behave: the need to matter – to feel significant. When people feel seen and valued they tend to thrive. Whe...

In almost every job interview, there’s one question that catches people off guard — not because it’s rare, but because most candidates think they already know how to answer it. They don’t. This episode begins by revealing that question and how to craft a response that instantly sets you apart. https://www.forbes.com/pictures/lml45mmjg/why-should-i-hire-you-2/?sh=4c5a502c53d8

Robots fascinate us — and that fascination may be leading us into trouble. Even when we know robots are just machines, we instinctively treat them like thinking, feeling beings. We trust them, empathize with them...

If you want a conversation to feel more engaging and connected, there’s a small, often overlooked detail that can quietly shape how the other person experiences you before either of you even says a word. And it all has to do with your phone. This episode begins with research revealing what that detail is and why it matters more than most people realize. https://pmc.ncbi.nlm.nih.gov/articles/PMC12110250/

You’ve likely experienced that rare moment when you just click with someone. Conversation flows. It seems effortless – it’s feels magical. But what’s actually h...

Written communication strips away tone, facial expression, and nuance — which is why texts and emails are so easy to misinterpret. Sarcasm, humor, and intent can get lost, sometimes with awkward or costly consequences. This episode begins with how emojis can restore subtlety to digital communication — if you know which ones actually help and which ones make things worse. https://www.sciencedirect.com/science/article/abs/pii/S0747563221002946?utm

Some of the greatest ideas — and even entire careers — were never planned. Potato chips, penicillin, and Post-it Notes were all accidents. Success often comes not from careful design, but from not...