John Harker

John Masefield Sard Harker 1924 HCDJ UK 1st 1st

John Masefield Sard Harker 1924 HCDJ UK 1st 1st

US $99.79

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SARD HARKER JOHN MASEFIELD 1924 FIRST PRINTING

SARD HARKER JOHN MASEFIELD 1924 FIRST PRINTING

US $9.99

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Tabata Anything - Four Minutes of Pain to Gain

This guest article was written by John Harker, a cardio kickboxing teacher in Santa Cruz, California. I have incorporated Tabata intervals into my workouts for a few years now, and they are a very effective way to get a lot of work done in a very short amount of time.
The Tabata workout is a [...]

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  • Should You Be Trying High Intensity Interval Training? High Intensity Interval Training or HIIT has become very popular, but that doesn’t mean that it is for everyone. If done improperly, this method of exercising can lead to injury or at the very least, some severe pain. While there are a lot of benefits to HIIT, there are a......

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