Additional workout solutions to consider:
GET TO KNOW JONATHAN ROCHE
Jonathan Roche is one of the nation's leading authorities on interval training and promotes the use of personalized interval workouts (using either heart rate or perceived exertion) to help people achieve maximum fitness and weight loss results. Jonathan is a certified personal trainer, an award-winning fitness video instructor, a 13-time Boston Marathon Finisher and an 11-time Ironman Triathlon Finisher.
"Our tester says: I have no concentration or discipline; this ball is so much fun you don't need concentration. It doesn't make me bored, and it gave me obvious results. There's more definition in my abs." - Women's Health & Fitness magazine