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How does your brain wake up from sleep?

  • Written by Hilary A. Marusak, Assistant Professor of Psychiatry and Behavioral Neurosciences, Wayne State University
imageRise and shine!JGI/Jamie Grill via Getty Imagesimage

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

What happens in your brain when you wake up from your sleep? – Ainsley V., age 11, South Carolina

When you’re asleep, you can seem...

Read more: How does your brain wake up from sleep?

When working out makes you sick to your stomach: What to know about exercise-induced nausea

  • Written by Anne R. Crecelius, Associate Professor of Health and Sport Science, University of Dayton
imageIt's no fun to exercise if you wind up doubled over with gastrointestinal problems.Goads Agency/iStock via Getty Images Plus

You’re doing it! You’re working out, reaping all those benefits of exercise that have been drilled into your head.

So you’re pedaling your heart out or running like you’re escaping a zombie horde....

Read more: When working out makes you sick to your stomach: What to know about exercise-induced nausea

Group exercise may be even better for you than solo workouts – here's why

  • Written by L. Alison Phillips, Associate Professor of Psychology, Iowa State University
imageDuring the pandemic, exercise classes and groups need to take social distancing guidelines into account.Noam Galai/Getty Images Entertainment via Getty Images

Group exercise is very popular: Nearly 40% of regular exercisers participate in group fitness classes. In advance of the coronavirus pandemic, the American College of Sports Medicine...

Read more: Group exercise may be even better for you than solo workouts – here's why

Seat belts and smoking rates show people eventually adopt healthy behaviors – but it can take time we don't have during a pandemic

  • Written by Randy P. Juhl, Dean Emeritus and Distinguished Service Professor Emeritus of Pharmacy, University of Pittsburgh
imageOnce upon a time, buckling up was new behavior.Harold M. Lambert/Archive Photos via Getty Images

Why do we do things that are bad for us – or not do things that are good for us – even in light of overwhelming evidence?

As someone with a long career in pharmacy, I have witnessed some pretty dramatic shifts in public health behavior. But...

Read more: Seat belts and smoking rates show people eventually adopt healthy behaviors – but it can take time...

America's newest voters look back at the 2020 election – and forward to politics in 2021

  • Written by Mary Kate Cary, Adjunct Professor, Department of Politics and Senior Fellow, UVA's Miller Center, University of Virginia
imageYoung Americans got involved in the 2020 election.Ariel Skelley/DigitalVision via Getty Images

As Americans end one year and begin another, one of the most controversial topics of conversation will be the presidential election.

We experienced the election season from a unique perspective. We each taught college courses on the 2020 campaigns while...

Read more: America's newest voters look back at the 2020 election – and forward to politics in 2021

The Sunburst hack was massive and devastating – 5 observations from a cybersecurity expert

  • Written by Paulo Shakarian, Associate Professor of Computer Science, Arizona State University
imageFederal government agencies, from the Treasury Department to the National Nuclear Security Administration, have been compromised by the attack.Tasos Katopodis/Getty Images

So much remains unknown about what is now being called the Sunburst hack, the cyberattack against U.S. government agencies and corporations. U.S. officials widely believe that...

Read more: The Sunburst hack was massive and devastating – 5 observations from a cybersecurity expert

In 2020, TV and film still couldn't get abortion right

  • Written by Stephanie Herold, Data Analyst, University of California, San Francisco

According to decades of research, abortion is an incredibly common and safe medical procedure.

But if you learned about abortion only from movies and TV, that’s not the story you’d see. For the last eight years, we’ve been studying onscreen depictions of abortion. We’ve found that Hollywood tends to dramatically exaggerate...

Read more: In 2020, TV and film still couldn't get abortion right

Whether slow or fast, here's how your metabolism influences how many calories you burn each day

  • Written by Terezie Tolar-Peterson, Associate Professor of Food Science, Nutrition & Health Promotion, Mississippi State University
imageWhy does it seem like some people can eat anything and not gain a pound while others are the opposite?Heide Benser/The Image Bank via Getty Images

It’s a common dieter’s lament: “Ugh, my metabolism is so slow, I’m never going to lose any weight.”

When people talk about a fast or slow metabolism, what they’re...

Read more: Whether slow or fast, here's how your metabolism influences how many calories you burn each day

How to outsmart your COVID-19 fears and boost your mood in 2021

  • Written by Laurel Mellin, Associate Professor Emeritus of Family & Community Medicine and Pediatrics, University of California, San Francisco
imageIt's all about emotion.Charles Postiaux/Unsplash, CC BY-ND

After a year of toxic stress ignited by so much fear and uncertainty, now is a good time to reset, pay attention to your mental health and develop some healthy ways to manage the pressures going forward.

Brain science has led to some drug-free techniques that you can put to use right now.

I...

Read more: How to outsmart your COVID-19 fears and boost your mood in 2021

Instagram's redesign shifts toward shopping – here's how that can be harmful

  • Written by Nazanin Andalibi, Assistant Professor, School of Information, University of Michigan
imageInstagram encourages you to connect with things as much as with other people.Panuwat Dangsungnoen/EyeEm via Getty Images

Recently, when I opened Instagram, I noticed that the usual spot for checking notifications is now a Shop tab. The Instagram blog post announcing the redesign said that the change will support small businesses and connect people...

Read more: Instagram's redesign shifts toward shopping – here's how that can be harmful

More Articles ...

  1. Getting COVID-19 vaccines to rural Americans is harder than it looks – but there are ways to lift the barriers
  2. 7 research-based resolutions that will help strengthen your relationship in the year ahead
  3. How to help dogs and cats manage separation anxiety when their humans return to work
  4. What’s not being said about why African Americans need to take the COVID-19 vaccine
  5. Would you eat indoors at a restaurant? We asked five health experts
  6. Magnetic induction cooking can cut your kitchen's carbon footprint
  7. Congress lifts long-standing ban on Pell grants to people in prison
  8. The icy backstory to that 'clink clink' you'll hear when raising a toast to the end of 2020
  9. Should pregnant women get the COVID-19 vaccine? Will it protect against asymptomatic infections and mutated viruses? An immunologist answers 3 questions
  10. How curators transferred Sequoia and King's Canyon National Parks' archives to escape wildfires
  11. How holiday cards help us cope with a not-so-merry year, according to a professor of comedy
  12. Can employers require workers to take the COVID-19 vaccine? 6 questions answered
  13. Can Joe Biden 'heal' the United States? Political experts disagree
  14. Why it matters that the coronavirus is changing – and what this means for vaccine effectiveness
  15. Why should I trust the coronavirus vaccine when it was developed so fast? A doctor answers that and other reader questions
  16. How high school sports became the latest battleground over transgender rights
  17. The morality of feeling equal empathy for strangers and family alike
  18. South Africa's inability to honestly confront AIDS shows the dangers of America's COVID-19 denialism
  19. Thousands of ocean fishing boats could be using forced labor – we used AI and satellite data to find them
  20. The psychology of fairness: Why some Americans don't believe the election results
  21. Oppression in the kitchen, delight in the dining room: The story of Caesar, an enslaved chef and chocolatier in Colonial Virginia
  22. Obama book offers key insight about how laws really get made
  23. Secular 'values voters' are becoming an electoral force in the US – just look closely at 2020's results
  24. Why do different countries have different electric outlet plugs?
  25. New antidepressants can lift depression and suicidal thoughts fast, but don’t expect magic cures
  26. If I have allergies, should I get the coronavirus vaccine? An expert answers this and other questions
  27. International Statistic of the Year: Race for a COVID-19 vaccine
  28. ¿Está regresando la Estrella de Belén?
  29. Granny's on Instagram! In the COVID-19 era, older adults see time differently and are doing better than younger people
  30. In Trump election fraud cases, federal judges upheld the rule of law – but that's not enough to fix US politics
  31. Why Facebook antitrust case relies so heavily on Mark Zuckerberg's emails
  32. When families of murder victims speak at death penalty trials, their anguish may make sentencing less fair
  33. What you need to know about this year's winter solstice and the great conjunction
  34. Here's why Christmas movies are so appealing this holiday season
  35. Llamas are having a moment in the US, but they've been icons in South America for millennia
  36. FDA authorized first over-the-counter COVID-19 test – useful but not a game changer
  37. The top scientific breakthrough for 2020 was understanding SARS-CoV-2 and how it causes COVID-19 – and then developing multiple vaccines
  38. Why retired generals rarely lead the Pentagon
  39. As heavenly bodies converge, many ask: Is the Star of Bethlehem making a comeback?
  40. 10 reasons why Anthony Fauci was ready to be the face of the US pandemic response
  41. Why the Puritans cracked down on celebrating Christmas
  42. Cuba redobla el acoso a quienes piden libertades creativas después de diálogo 'inédito' con artistas
  43. Black candidates can win in swing districts
  44. Wildfire smoke changes dramatically as it ages, and that matters for downwind air quality – here's what we learned flying through smoke plumes
  45. President Trump's use of the authoritarian playbook will have lasting consequences
  46. Cuba cracks down on artists who demanded creative freedoms after 'unprecedented' government negotiations
  47. US nonprofits raised $2.5 billion on Giving Tuesday in 2020
  48. 4 signs that food pantries improve the diets of low-income people
  49. 5 ways MacKenzie Scott’s $5.8 billion commitment to social and economic justice is a model for other donors
  50. Museum specimens could help fight the next pandemic – why preserving collections is crucial to future scientific discoveries