I started sprinting just recently and i have worked very hard at it and i have ran as fast as i can. My best time at the biggining of last week was 13.4 seconds, no i timed myself using a light censor and it says i ran 100m in 11.6, i thaught the machine could have dun sumthing wrong so i did it again with my dad checking and i did it 11.9, how in just a week did i become 1.8 or 1.5 seconds faster,,

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