This item is taken from the monthly magazine Sciences et Avenir n°952, dated June 2026.
Five fruits and vegetables a day, at least seven hours of sleep, 1.5 liters of water, 10,000 steps a day… The list of recommended daily health goals is endless. Some, however, have less scientific basis than others. And when these goals are too difficult to achieve, they can be counterproductive and discourage many of us from even trying… Like those famous 10,000 steps a day, which represent 6 to 8 kilometers, or one and a half to two hours of walking daily. So, what's behind this number, and what does science actually say about it?
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