BBC試驗：萬步不萬步 關鍵看速度
圖片版權 Getty Images Image caption 速度比步數更重要
Lin mark this message contains true information
｜originally written by Lin
許多人可能覺得每天走一萬步太難了。而即使真的完成了，也未必能達到預想的效果。
References
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