I think learning to feel is something pretty important in our todays society and it goes far deeper thant just the physical application. It is really rooted in our believe systems and the way we percieve our reality.
When you look in some old native cultures and you will find for example war dances or like in russian martial arts you have cossak dance and stuff like that. This activites where not just some primal rituals but they helped to create freedom and the ability to feel in the body. Let me share what I belive are some of the most important factors too feel. But remember even to talk about how to feel will not bring you closer to actually feel it so the most important thing is to try and play with it......
1. Relaxation and natural posture
I think this is one of the main reasons younger people learn faster BJJ than older people. There is not so much uncouncisous tension in the body of younger people. They have not so much postural problemes and the degree of freedom in their joints is much better than in older people. Don´t get me wrong muscular tension is also pretty important but it has to be concious muscular tension that is used by purpose. If you walk around with a body full of tension and postural problemes you will never be able to be precise and free because these tensions will work against your own movements. Many people drill like crazy to make cwertain techniques stronger but I belive it would be much more effective to get rid of the limiting tension so technique will come much more naturally
2. Articulation of joints
That´s where the dance and movement stuff comes into play. In our civilized society we are sitting around for hours and we are used to work pretty much two dimensional. We move up and down and side to side in predictable patters controlled by our concious mind. This will lead to an movement amnesia we just forget how much more options to move we have and since we are not able to move 100% we create more complicated movements to overcome our deficit in joint articulation. In other words we are not aware of many movements because our body isn´t aware of his ability to articulate his joints in endless ways.
3. Plasticity
This is also pretty important and all the good guys in BJJ have it. Plasticity is the ability to being aware of the whole body while moving around. Bascially your body is connected and when you move your arm it will also effect your hips and feet and you are able to move around with this whole body awarness. Usually people have very good awarness in their arms since we are used to move a lot with them but when it comes to core and legs people don´t have much awarness and dexterity because they are more focused on their upper body. That´s why leglocks often are so difficult to defend we don´t have the same dexterity in our lower body like we have it in our upper body but we can change that by exploring more and more degrees of freedom in our legs, hips and spine.
4. Dexterity
Which is connected to plasticity. Good people can not only feel there whole body they can also keep this awarness and move through more or less challenging movements. Handstands, Head Stands, crazy guard passes are good expamples of this but there is a whole level of dexterity which is only happening in the small muscles and facia in the body which you can´t see from just watching.
5. Breathing
Breathing gives you not only relaxation of your mental attitude it also relaxes the core muscles and only if the core is relaxed you are able to coordinat your movements in a effecient and graceful way. If you don´t belive me just play piano or dance while holding your press it is possible but you will be not very good while doing it. The ability to coordinate breathing and movement at any speed is crucial to be able to use all the qualities I talked earlier about. You will not feel and articulate much if your breathing is restricted.
6. Quite mind
That is pretty important but also difficult. I belive the real "magic" only happens if you are able to quite your mind completly so your instinct and body can take over and just do his job. Thinking will always interfere with feeling especially in fast paced scenarios like fighting. You have to be able to get your mind our of your way to acess your ability to feel a 100%.
So what to do with all these qualities?
In my opinion you use these qualities to explore Jiu Jitsu. In my earlier days I wanted to learn all the details of a technique and I was happy to collect them and write them down and understanding them and knowing them but what missing was my ability to just applying them in the right moment.
Today I don´t care about details. I am not even looking for them. When I explore a new move or teach an old mocve I just use all my tools of feeling to explore and express the move. It´s funny because when I teach seminars people are so happy about all the details but honestly I don´t even know all the details before I just show the technique slowly and let my body show me all the details and then I point them out to my students. I just observe what my body is doing and then I articulate my information.
I don´t think this extreme way is for everyone but for me this is the main direction of my training. I am training the body to show me the secrets.
I belive for most people a combination of interlectual understanding and the ability to physical feel would be a great thing but since our society is already more focused of the interlectual side the feeling and expression thing is something we should maybe focus a little bit more