Resonance

As part of the unified field, as part of the One, when you see or hear information that is truthful, you will feel it in your body, your body will respond, it will go into resonance with the information and you will feel the truth vibrating in your cells, in your blood, in your bones. That is the inner knowing. An 'outside' piece of information that corresponds to a bit of information stored inside your body. As part of the unified intelligent field, your body is made of this intelligent field, so it already contains the truth. As your vehicle for self exploration, your body already holds the information you are exploring. The outer exploration of life is the inner exploration of self.
Honoring the body for what it really is, treating it with love and care, feeding it clean, real food, giving it the exercise and rest it needs will clear the body of toxins that may impede it from performing as it is meant to. A clear body will bring a clear resonance. Think of a beautiful clean crystal glass and the pleasant sound it makes and than imagine the same glass smeared with mud and debris and certainly the sound would not be the same, if any. 
Taking care of your body will help hone your skills in recognizig the truth. It's already in there, in you.