Muscle Testing is also known as Finger Testing. Your own nervous system can be used to discern Truth from Falsehood. This also includes things that exist in the non-physical and many other things. When you think of something that is True, your mind causes your nervous system to react and some muscle functions get stronger, like your fingers, etc. You are already used to doing this, your mind wants to lift the arm and you lift it. (Mind) Grab something and you grab it. Walk somewhere: (Mind) Walk -> (Nervous System + Muscles + Body) Walk. One method for this is to pinch your thumb and index finger gently together to make an 'O' and use your other index finger to test the finger strength where the gently pinching fingers meet. • Say or think your own first name and the pinching fingers remain firm and you cannot easily move your other finger through the pinch. • Say or think of someone else's name, that isn't yours, and your pinching fingers get weaker and you can easily move your other finger through the pinch. "Can I ask this?" as you formulate the thought in your mind, is good practice. Note: that some responses may be misleading if you have own emotions, feelings and dualities that block a proper response Yes/No or True/False, i.e. your nervous system may react to your own emotions and the pinch is forced, causing misleading responses Yes/No. Note: It is also of importance if the question is beneficial for life, etc. Truth is one of the underlying fundamentals in the Universe. Existence is True, we wouldn't exist otherwise. That goes back to an underlying Will for Existence, but that's another understanding. Me, I don't like the male concept of that underlying Will because that the Will for existence is beyond gender. That Will doesn't take sides between countries or religions, it is Existence itself. Do no harm to others and you will be better aligned with the Will for Existence. Do you have an emotion or feeling right now? Does you gentle pinch remain firm or become weaker? Put a name on that emotion/feeling/duality and test again, is it this? Put a sentence on it, test if it's True and just relax/meditate on that for a bit. Test again, is it gone? Me, I did read the entire book 'Power vs Force' by David R. Hawkins to realise and understand this. When reading the first chapter and feeling bored, I skipped and landed on the third chapter. The book took me weeks to read because of all the condense knowledge and information in it. Sometimes I could only read one or two pages and then take a break to contemplate on the information. After finishing it, I thought: "How can I do this on my own?". Then I went back and found the finger pinching technique in Appendix 'C'. The mentioned book is not for everyone though. You are on your own path, don't compete with anyone else. Life is a journey. If you feel that it is not for you, it is not for you. Book among Links. Me, I've must have read 20 different books under the 'New Age' section in book stores/on Kindle. I think my own journey really started with the book 'Highly Sensitive Person', also under Links. But that journey was mine, You are on your own.