Grounding techniques keep you focused in this reality as you go about your daily lives. If you are ungrounded, you can feel spacey and vague and have difficulty functioning due to your mind being elsewhere.
Body dowsing is a natural skill we all have. It takes practice and self-awareness to become skilled to understand what your body is telling you. Yes, you can do it too 🙂
Your aura, auric field or energy field are just different names for the same thing. We each have a field of energy around our physical bodies and sometimes it can be damaged, but it can be repaired.