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BlowinBubbles21
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I currently do this in fitness at school. And today I did it for 3.10. First time i've done it in a year or so. So this is my benchmark. I've heard it kills the next day tho... oh dear. But 37 minutes. It shall be done! haha
in
plank, how long can you do it?
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BlowinBubbles21
September 2013
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