My poor yoga students. I've been all about your core the last week or so as a result of this thread...
That one came from Shiva Rhea's core abs workout. I
highly recommend it for anyone with a little yoga experience who wants to work their abs.
The workout is about 37 minutes, but it's broken into three sections so you could easily choose a shorter segment. Shiva has a very new-agey way of speaking that could be irritating to non-yogis, and she has a very calisthenic approach that could be irritating to hard-core yogis.
IOW, she's really the worst of both worlds, and yet I LOVE her.
The workout is made up mostly of ab moves you will NOT already have done elsewhere.
(Maria, did yours come yet? I'm anxious to know if you liked it!)