The goal of Fine Tuning is to give the neurons in the brain exercise turning on and off at appropriate times, so they can clearly perceive, transmit, and represent each consonant sound when they are used in combination with a vowel sound.
In Fine Tuning, one of two similar syllables are spoken, such as bo and do, or ga and ka. Select the one that was spoken. As simple as that sounds, it can be an extremely difficult exercise.
Tip!: While you may believe the two sounds are the same, we assure you they are different. These kinds of sounds are called, "confusable pairs", and they can be quite deceptive.
For more on the Fine Tuning exercise and the science behind it, click here.