Without question coaches who try to bring wrestlers to a higher level inevitably relate the importance of drilling.  To compel young wrestlers to mind the importance of drilling more than one coach has expounded the adage "once isn't enough".  Coaches go on from there, "over and over again---you have to hit that move ten thousand times before you really know it."      Most wrestlers feel comfortable to move on with a few times of practice.  "Is two on each side enough coach?"      The been there done that attitude of today's culture flies in the face of the message the wrestling coach pushes.  As soon as kids hit one move they are ready for the next.        Maybe wrestlers today can learn the techniques of greatness quicker than ever before.      Could it be that drilling needs to be a lost art in the sport of wrestling?       I accidentally found the answer in an unlikely place, Grand Central Station, New York City.  And of course the answer is no.  After my visit to the legendary train stop, I have a deeper understanding to the essence and importance of drilling.      Drilling is really more than just knowing the fundamentals of a technique.  Head on the outside for a double leg, head inside on a single.  Certainly, wrestlers learning skills can effectively process the micro steps of the macro skill quickly.  But the ultimate goal for wrestlers is to internalize a move, a series, or a set of reactions.  Drilling makes something second nature.     To internalize or truly understand the skill, the speed, and the force that a technique or move is activated really means taking out the roughness.      When you first started wrestling, remember that awkwardness that accompanied you?  Everything seemed unnatural.  It was definitely more comfortable to stand straight up than to bend your legs into a stance.      Any move that you first started to practice was bound to be rough.      But as you came to practice more and more often the roughness seemed to disappear.  Eventually, there was even more speed and power to each successive shot taken.      To know a move you have to drill it.      In a sense drilling is like seeking information.  How fast can I finish this technique?  What's the best place to put my knee or my hand on this shot?  Each successive try of that technique reveals a little more and rubs a little more of the roughness off.      Grand Central Station is an ornate and spectacular building in the heart of Manhattan built from rough-hewn stone. Millions of travelers to countless destinations had wandered through the locale.  Day or night, year round for nearly a century they have came through this landmark.      I had stopped by this historic building trying to get a feel for a city that can easily overwhelm anyone.  It's no surprise that I felt a little lost, so as probably millions of people had done before me I walked across the marble floors under the giant rotunda of the station towards a centrally located information booth.      As I stepped up to ask directions, my feet discovered the answer to 'Why do we drill?'      As I stood at the information desk asking directions to St. Patrick's Cathedral, I realized how uneven the floor was beneath me.  The stone was polished and level across this old landmark, but at the base of the information booth with thousands or millions of travelers before me, the stone was pitted and worn.      Countless times people had slid up to that information booth, asking directions to here and there.  And every time they stopped to ask a question the repetition left its mark, taking a little of the edge off of the floor under where they stood.    Over and over people had drilled a mark into Grand Central Station.  The stone was no longer rough or level at the base of the information booth.  A noticeable dip or well had developed through the years.      To me the moment was amazing.  I got my answer and stepped back.  I walked around the whole information booth, dragging my feet from the high to low spots in the stone.  Wherever a person was answering questions at that information booth another shallow hole had developed.      Why do we drill in wrestling?  The answer can be found at the information booth in Grand Central Station.  We drill to take the roughness out of the skills that determine wins and losses.      Though at the time it might seem like we know the move and its time to move on, chances are the roughness hasn't been worn away completely.  Chances are a few more repetitions are still needed.      Drilling takes time and can be tedious.  But, take the long view.  A wrestler that drills moves repeatedly, and stays true to the power of repetition, will make his mark in stone.