120 seconds

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Feb 6, 2010 3:47PM 120.0 seconds

120Plank

240 seconds

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Feb 3, 2010 12:00PM 240.0 seconds

390 seconds

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Feb 2, 2010 8:44AM 390.0 seconds

300P 45L 45R

90 seconds

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Feb 1, 2010 12:00PM 90.0 seconds

270 seconds

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Feb 1, 2010 8:30AM 270.0 seconds

120P 30R 30R 90P

120 seconds

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Jan 30, 2010 12:00PM 120.0 seconds

210 seconds

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Jan 26, 2010 12:00PM 210.0 seconds

misc.

270 seconds

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Jan 25, 2010 9:38AM 270.0 seconds

189 plank 45L 45R ouch.

Plank

The Plank is a good way to strengthen the stomach and core muscles without doing sit-ups.