i am OBSESSED with this woman...she has the backing of mega in shape stars like gwenyth and courtney cox and it's for a reason - her work outs are insanely effective. my pilates teacher gave me two of her dvds - the post pregnancy one i saw results after doing it twice! i just came across this short arm workout posted on GOOP and stopped working to do it real quick...hard to keep up with her at first but my arms are burning and it was a great way to get some more energy. plus its fun to do to music and pretend you are dancing in your living room. if you are looking to get in shape, Tracy is the woman to help you.