It's difficult to describe it but, our sensitivity to the subtle bodies, including our own, is heightened when we are less inhibited by our own conditioning. "I can't feel this, I can't connect to another's soul, feel their emotions, No way! What am I, a sage?"
Personally I often forget about it, I drift back into a normal, bounded state of affairs. Where we must pick up what others think and feel by clues they give. Where we often hold up our personal fortress and interact with the world through a fence. Sometimes it's so easy to forget that's all artificial, and not realize that being open and boundless is actually a release from such heavy, convoluted mannerisms. It's already, always present. Your fear, your will, your "i" shouting in the night is the only act of refusal. Release, open, and swim a little in the river. For in truth, "simply being" is closer to you than your own breath.