What, in the golf swing, do you think is the most physically difficult?
That may , on its face, seem like a dumb, trivial question. But, we, as humans, tend to avoid, compensate for, or not practice the hard stuff and do the easy stuff.
HB
Many years of driving the knees and reverse "C" has made it difficult to not overdo my axis Tilt. When I feel that I have tilted my spine a lesser amount it feels like an over the top move to me.