The Brain Booster Ebook Download (PDF), by Christian Goodman. Have you ever thought why we have not accessed the rest of the brain despite the advancements in the field of research? Well, the simple answer is that we indeed use more than just 10% of the brain and that our brain is active almost all of the time. This can be confirmed through neuro-imaging techniques like PET [Positron Emission Tomography] Scans and MRIs [Magnetic Resonance Imaging], that show us the brain in action and it is seen that the brain lights up during even simple tasks such as walking, talking and also during resting! Even during sleep, some regions such as the frontal cortex [That controls higher-level thinking and self-awareness are active].