The fitness benchmark has surprisingly unscientific origins – yet it does contain more than a kernel of truth

The idea that we need to walk 10,000 steps a day originated not in medical research but in a 1960s marketing campaign for a pedometer, says Jack McNamara, senior lecturer in clinical exercise physiology at the University of East London. The round number was easy to remember and the idea caught on, despite there being no scientific evidence for 10,000 steps as a specific threshold for health.

“When the research community looked into it, they found that there were health benefits, so it didn’t necessarily get thrown out as pseudoscience,” says McNamara.

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© Illustration: Edith Pritchett/The Guardian

© Illustration: Edith Pritchett/The Guardian

© Illustration: Edith Pritchett/The Guardian

Golden Valley, Herefordshire: Even vicars can get stuck too much behind a desk, and the 800th anniversary of St Francis of Assisi’s death is a good excuse to strike out, and speak to local people

I was sitting at my desk again, with the dull hum and the blue glow of the screen. It seems that every occupation traps people at their desk, and being a vicar is no different. But I wanted to resist, and it happened to be the 800th anniversary of Saint Francis of Assisi’s death. With Jesus of Galilee as inspiration, Saint Francis was known for his vow of simplicity, his love of the Earth and his critique of the wealth accumulated by the religious elite at the expense of the poor. He was also horrified by the Fifth Crusade, so he travelled to Egypt, hoping to make peace.

Francis also walked the walk, as it were, sleeping in caves in the Umbrian hills, taking nothing with him. No sitting at the desk for Francis. So I decided to do the same, spending three days walking the bridleways, holloways, footpaths and country lanes of the Golden Valley, speaking to people along the way. My sanctuary for the night was one of my parish churches – Madley, Tyberton, then Peterchurch, with its very welcome underfloor heating.

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© Photograph: Simon Lockett

© Photograph: Simon Lockett

© Photograph: Simon Lockett

In 1998 Karl (a Kurt Cobain look alike) set off from Punta Arenas Argentina, with $500 and the intention of walking -or swimming - all the way back to his home in Hull, England. Twenty Eight years - and 36,000 miles - later he has swum the channel to arrive in Dover and have some proper fish in chips with mushy peas.

From ancient forests to spas, medieval cities and the birthplace of Bauhaus, Thuringia packs a punch for a car-free autumn break

It’s early morning in Erfurt, the capital of Germany’s Thuringia region, and Domplatz is abuzz with local growers setting out crates of vegetables and flowers beneath the soaring medieval cathedral towers. This 14th- and 15th-century engineering wonder holds the Gloriosa, the world’s largest medieval free-swinging bell, cast in 1497 and weighing 12 tonnes. Though the city and surrounding landscape are notably flat, its skyline is pierced by soaring church towers and steeples, the atmospheric old town hardly changed over the centuries.

Thuringia – often called the “green heart of Germany” – lies in the centre of the country, between Hesse, Saxony and Bavaria. It’s famous for its dense forests, intellectual heritage and hearty cuisine, and I’m here for four days to explore using public transport.

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© Photograph: Mo-Jo-Lo/Getty Images

© Photograph: Mo-Jo-Lo/Getty Images

© Photograph: Mo-Jo-Lo/Getty Images

The ex-soldier has marched 36,000 miles since he left Hull in 1998. He’s crossed the Americas, Asia and Europe, fallen in love, been held at gunpoint and been deported, in between nearly drowning, nearly dying of thirst and nearly being eaten. But that’s just the start of it …

‘It’s a big moment,” says Karl Bushby, who has had plenty of big moments in his life. He is recording himself on his phone for social media. “We’re in Dover, and I’m about to have my first fish and chips and mushy peas in 28 years. Mushy peas, my God, I forgot they even existed!” He points his phone at the plate in front of him. “It better be good.” And he tucks in. “Mmmm. See, this is a big chunk of fish and a decent bit of batter, and that’s something you don’t see in other parts of the world. I mean, come on! That. Is. Fish. And. Chips! You see, Britain is special.”

It has been two days since Bushby swam the Channel to return to England. Tomorrow, he’ll start the walk home to Hull for the first time since he left in 1998. He hopes to get back on 1 November, the same date he set off all those years ago.

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© Photograph: Courtesy of Karl Bushby

© Photograph: Courtesy of Karl Bushby

© Photograph: Courtesy of Karl Bushby

Our testers reflect on a year of discoveries, from family game nights to fewer chores

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It’s our birthday! So to celebrate turning two, we asked our contributors to reflect on their year of testing pretty much everything – from beauty products to video doorbells. It turns out they’ve had some unexpected wins along the way.

Some managed to tick an extra thing off their to-do list. “After six months of testing IPL devices, epilators and then IPL devices again, I had no need to book in for my usual pre-beach wax this summer,” says Lise Smith. Rachel Ogden says testing toasters has meant knowing her smoke alarm “works just fine”.

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© Photograph: Sian Lewis

© Photograph: Sian Lewis

© Photograph: Sian Lewis