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Mengapa paru paru dan jantung bekerja lebih kuat semasa berlari
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Mengapa paru paru dan jantung bekerja lebih kuat semasa berlari

User Syden
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aktiviti menggunakan banyak oksigen. jadi paru2 n jantung kerja kuat untuk ganti oksigen yg digunakan
User OOPer
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