I highly recommend the kegelmaster to all the females who would like strong massive muscles. Take it from me, I've been using it for almost one year. I marked down each time I started my first springs, second springs etc. Now today I am on my fourth springs (Cool). I never thought in my wildest dream that I would get to the fourth springs. It took less than a year to get there. What I like mostly is the cooperation from all of the staff members at kegelmaster. They had all of the answers to my questions, not one of my questions went unanswered. It's just too bad that my exclamation keypad is broken, because I wanted to express my appreciation for the whole kegelmaster crew with an exclamation symbol. My well pleased fiance and I would like to say... Thumbs up to Kegelmaster.