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