This book is for people who have already done weight training or are in very good physical shape. I thought I was in good conditions, but the exercises in this book are really hard to do if there is not a minimum requirement and equipment (especially that there must be buy a ball for exercises 20 at D ........ No, thoroughly shape)
I have to say against the result is astonishing: the abs are really nice redesigned (but not like the picture, do not réver) and exercises avoid hurting your back.
In short, with a ball, floor mats and 9 minutes a day, this book gives good advice to reshape her stomach.
