Abs on the Ball

Descriere

Innovative abdominal exercises to help tone the abdomen, improve posture, and build a strong back using the Swiss exercise ball. Offers a 10-minute and 20-minute workout for all levels of fitness. Shows how the mobility of the ball targets underutilized muscles. Shows how traditional sit-ups and "ab" machines limit how much abdominal muscles can be trained and also aggravate lower b[Bokinfo]