ab workouts

Hanging leg raises - http://www.youtube.com/watch?v=G0ysNevIv0w

Browse through this, I do most of these workouts 3 times a week for abs - http://www.youtube.com/watch?v=kpkIbtINmFk 

reverse oblique twist --- http://www.youtube.com/watch?v=-aMRL9UwNr0  (ignore the loud music if you can )

last but not least implement these ---  http://www.youtube.com/watch?v=Hln0qUfwPOQ

Do these 3-4 times a week with your regular workouts, maybe 20 minutes max on abs, if that.    You will start to shred.  Now that I hit 184 I'm going into shredding phase and implementing hardcore abs with some cardio, ill let ya know how it turns out in about 3 weeks.