Best Yoga pose for Strong Abs!
Even better than Navasana (boat pose) is forearm plank. A great strengthener for the stomach & back muscles and great for posture definition. Read more ....
How To: From plank pose, draw navel to spine & lower down onto your forearms ensuring elbows are under shoulders, hips are slightly lower than shoulders & hands are shoulder width apart. Keep lifting navel to spine as you hold forearm plank for upto 60 seconds ... if 60 seconds is too long for you, hold as long as you can & build up to 60 seconds over time.