How do I tell the difference between feeling physical sensations and feeling chi?

Both your physical body and chi generate sensations you can feel. The sensation of chi is just as concrete as the physical body, only slightly more subtle, with a feeling that is lighter but nonetheless very real. Some compare it to bioelectricity. Some of the standard sensations of chi are heat, cold, pressure, wind, light, electricity, numbness, and mist. For example, in a platonic relationship, a touching of hands or a peck on the cheek is usually a fairly physical experience. In a sexual context however, a touch or kiss can send an energy wave within and throughout one or both of the participant's bodies. This wave is chi.