Shiva Rea: Creative Core Abs Yoga DVD All good things flow from a strong core, a natural emphasis for yoga. (Plus, it must be said, strong abs look good.) One of the world’s top female yoga teachers presents a targeted abs workout that’s creative and fun to do, not repetitive and dull. You build the strength and grace that would come from surfing or hiking. Do the workout all at once, or in 10- to 15-minute segments that fit your busy lifestyle. Run Time: 37 minutes See more with Shiva Rea here!