Watch and learn from our expert how to do ab crunches in this free fitness video on doing aerobic exercises and weight loss tips.
Expert: Katie Bowers
Bio: Katie Bowers is a nationally certified fitness instructor and personal trainer with over 8 years experience. Being a dancer and a former gymnast, she knows how important stretching is for muscles.
Filmmaker: Louis Nathan
nice..i should try that....
Beautifulyang1 2 years ago 4
Me too, it was very helpful.
I', now only 174kg
estpla12 2 years ago