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Technological doping: The science of why Nike Alphaflys were banned from the Tokyo Olympics | BBC Science Focus Magazine
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![Weekend lineup. Nike Alphafly for parkrun tomorrow and Adidas Boston 10 for Sunday's long run. Happy new year everyone. : r/RunningShoeGeeks Weekend lineup. Nike Alphafly for parkrun tomorrow and Adidas Boston 10 for Sunday's long run. Happy new year everyone. : r/RunningShoeGeeks](https://preview.redd.it/uqmm7h75yu881.jpg?auto=webp&s=80fa7d3fd8e8d3512089a314a7c677f49499ac60)