National Geographic | Mind, Body, Wonder

This week, we discover when exercise can hurt you, find ways to stave off age-related memory issues, build good bones beyond vitamin D, discover the PTSD/psychedelics connection ... earn the sweat in Finnish saunas.

A patient suffering from chronic fatigue after being infected with COVID-19 takes a rest during rehabilitation exercises on a stationary bike.

PHOTOGRAPH BY MARCO DI LAURO/GETTY IMAGES

Long COVID can destroy your ability to exercise. Now we know why.

What happens when you work out too hard? If you have long COVID, things can go downhill fast. Why? A new study points to muscle damage and the ability to make energy.

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Your gut may be the key to chronic fatigue

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These 7 hormones influence how much—or how little—we eat

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You eat, drink, and breathe plastic. Can we stop?

A photo illustration of an x ray arm pouring a glass of milk

PHOTOILLUSTRATION BY NICK VEASEY, SCIENCE PHOTO LIBRARY

Good bones are about more than Vitamin D

We all know about the benefits of Vitamin D when it comes to keeping your bones healthy. But what about the other critical nutrients from several others? Here’s what you need to know, and why the best course is to get vitamins through food rather than supplements (unless a doctor recommends otherwise).

HOW CAN THEY TELL?

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Lifting heavy weights can help you mitigate osteoporosis. Here’s how to get started

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Prehistoric women had stronger arms than modern athletes

A man lifts weights. Many scientists say the key to preventing disease in old age is getting enough exercise, including weightlifting.

PHOTOGRAPH BY DAVID GUTTENFELDER

Want to keep your memory sharp? Here’s what science recommends.

Age-related memory loss is in the news. From how much to exercise to which foods to eat, these are the changes you can make to stave it off.

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Dementia has no cure. But there’s hope for better care

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How to take care of your aging brain

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New hope to ease PTSD for veterans

A spread of vegetables on a chopping board and a table

PHOTOGRAPH BY ANDREA FRAZZETTA, NAT GEO IMAGE COLLECTION

9 simple ways to boost your mental health

Little things can make a big difference. When many things feel out of your control, there are things you can put into practice right away. Declutter. Listen to birds. Get out into nature. These are among the scientifically proven suggestions we’ve gathered.

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Wait, does chocolate help? Is it really good for you?

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Do your dogs help you relax more than your friends do?

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5 simple ways you can live more sustainably

Dermatologists inspect moles for signs of cancer, such as irregular coloring or borders.

PHOTOGRAPH BY MICROGEN IMAGES, SCIENCE PHOTO LIBRARY

It’s the deadliest skin cancer. Why do doctors overdiagnose melanoma?

A recent study finds that many Americans are being told they have skin cancer unnecessarily. Experts weigh in on why that’s happening—and whether you should get an annual screening. How do we know and what does this mean?

READ MORE TOP STORIES FROM NAT GEO

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Letting off steam: Everything you need to know about Finnish sauna

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This is your body on love

Five of the best breakfast ideas from around the world

Toxic love: Breaking off a relationship with sugar

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