Freedom and weightlessness. That it was you are trying to find in the pose. The heavier and more resistant you feel means the deeper you must go into this understanding. Lightness. 
I don’t know if I have ever truly achieved any remarkable pose in yoga. However, I have achieved what it is to feel remarkable. Open, unlimited, expansive and positive. Allowing energy channels to flow unblocked like an open highway towards my goals.
The lines from tension and worry on my face have disappeared and have been replaced with glowing radiance. I return to a state of relaxed ease, like a gentle breeze swiftly rolling over calming seas.