ISBN-13: 9781628841619 / Angielski / Miękka / 2013 / 36 str.
ISBN-13: 9781628841619 / Angielski / Miękka / 2013 / 36 str.
When many people think of mental performance they simply focus on the level of intelligence that an individual can have. Little or no focus is placed on how the brain can be kept working at optimum capacity.