Do the following four days a week:

3x Side crunches (12-15 each side and weighted)

3x Jacknives (8-12 and weighted)

3x Crunches with feet up (8-12 and weighted)

Rules

Challenge yourself

Du aktualisierst die Ergebnisse dieser Challenge manuell hier auf der Challenge-Seite

Challenge is between 2013-09-30 and 2013-11-03.