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  • Ehhh no thanks.

  • kasey akira is retarded. do you think sprinters dont do anything but sprint fast? you can have all the endurance in the world but still not be fast. drills like these make you faster. get off your couch and train for something and maybe you will understand

  • Swimmming fast is good, but by doing repetitions like her exercise, your working the muscles more because if you simply swam fast, you eventually get tired and start to loose stroke efficiency which then reduces the amount your muscles are being worked.

  • NO ENTIENDO cual es el sitio web?

  • thanks, this is a great help

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