Tai chi chuan

Instead of feeling apart from what is happening, we feel the physics of the movement, the kinetic flow.
Our own body and our self-consciousness is lost in the event itself.
There is no more self or other, just movement, just sensation/feeling.
The ability to do this is the aim of tai chi chuan partner work and combat training.

Everything is determined by the attacker, the other.
Their force powers your response, their movement your movement. Without an attack there would be no need to respond.
At some stage in your training, self fades and there is just the yin/yang diagram.
This is when the response feels to have happened by itself.
Habit is necessary, but we must also have the capacity to adapt, change and improvise.