Doing strenuous exercise, it helps to shout the number of reps. Why?
Calling out the number of repetitions when doing exercise such as a weightlifting could have numerous benefits, say our readers - both physical and psychological
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Would a tug of war be possible over 42 km between France and England?
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How much of my body from 40 years ago is part of me today? (part 2)
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This week鈥檚 new questions
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The strange story of the nuclear submarine and the super glue repair
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Tom Gauld: Gavin failed the archaeological statistics course
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Twisteddoodles: Being a scientist often involves disappointment
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Earth
Magnificent photograph captures eruption of Fagradalsfjall volcano
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Life
How a log pile in your garden can be a haven for wildlife
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When is a bear’s face not a bear’s face? When it is a Mars bear
Feedback compares the smiling bear discernable in a NASA photo of the surface of Mars to seeing Jesus on a piece of toast, while also pondering the dangers of romance with someone who is "gross"
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What is the most efficient way to load passengers into an aircraft?
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Why are birds mostly monogamous, but not mammals?
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This week鈥檚 new questions
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Tom Gauld: Maths puzzles for conspiracy theorists
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