A truly unique workout philosophy. 22 minutes, 2X per week. Build strength with slow movements.
Good thorough instructions for 3 stability ball exercises. Great for working the core muscles, improving posture and toning abs Variations are provided for different fitness levels, from beginner to athlete in training.
This guy is claiming you can get a great abdominal workout, just using upper body exercises. I tried it and it works. The whole exercise routine took about 15 minutes.