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Steely Abs: Should you wish, use instead of sit ups. Do what is recommended.

  First Week    Second Week    Third Week

  Fourth Week    Fifth Week    Sixth Week

  Seventh Week    Eighth Week: Testing, testing!

  Ninth Week    Tenth Week    Maintenance: the constant necessity.

Original, so the address is wrong, the plastic wall sheet is unavailable, but maybe it is on eBay?