You can only answer ‘yes’ or ‘no’ to every question. From the top... Do you instinctively harmonise with the end of ‘Happy Birthday’? Often find yourself conducting along to the radio? Take our ‘yes’ ...

Fortunately, you can use a quick and easy muscle testing method with your fingers when you can't decide on an answer to a "yes or no" question. Muscle testing, also known as applied kinesiology or ...