I have been using them for about 4 months approx. 3 times a week and love them. I am doing KettleWorx and 2 different Bob Harper DVDs -- I use 10 and 15lbs and the workouts are heavy on the cardio side. I have noticed that my core is much stronger and I am swimming faster.
I have been using them for about 4 months approx. 3 times a week and love them. I am doing KettleWorx and 2 different Bob Harper DVDs -- I use 10 and 15lbs and the workouts are heavy on the cardio side. I have noticed that my core is much stronger and I am swimming faster.
