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7 Weeks to 300 Sit-Ups
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Strengthen and Sculpt Your Abs, Back, Core and Obliques by Training to Do 300 Consecutive Sit-Ups
Author: Stewart Brett
Paperback: 154 pages
Publisher: Ulysses Press (March 13, 2012)
Language: English
ISBN-10: 161243049X
ISBN-13: 9781612430492