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  • Basic Training: How to Increase Your Number of Sit-ups by 400%

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Basic Training: How to Increase Your Number of Sit-ups by 400%

Learn how to increase your number of sit-ups by 400 percent in this US army basic training video from Howcast. Expert: Sergeant Michael Volkin

Howcast | December 21, 2011Watch more videos from Howcast

Tags:. .Instructables. .sergeant. .ups. .sit. .percent