Our brains have systems to control the frontier between inner and outer worlds. When those controls are weak, we get distracted, act impulsively or fail to stay focused outside ourselves. Inattention, uncontrolled movement or speech, problems with sleep, difficulty processing language can all appear as a result of problems in these areas. A brain “stuck” in slow speeds—or one that has difficulty maintaining middle speeds—will likely experience such issues. Brain-training can improve brain metabolism allowing neurons to fire faster for longer periods. It can also allow neurons to sustain consciousness speeds, saving energy and improving control.