For each task the learner's brain, eyes, ears and muscular system organise themselves in a pattern unique to that individual. This may be temporary or intermittent and can affect anyone, of any age, at any time.
Stress is frequently a contributing factor.
Related to a specific task, Brain Gym sets out to identify the critical functions of the brain, eyes, ears and muscular system that are not organised appropriately. The learner can then re-organise the functions using particular activities and movement sequences. Improvements in the learner's abilities are often immediate although continued regular application of the activities and movements are likely to be required for a time to integrate the new organisational patterns. Then you need to read the best book on the market about all this. We can supply.