London taxi drivers that need to remember approximately 35 thousands streets and their more or less recent state, have two changes in their brains: they have a

London taxi drivers that need to remember approximately 35 thousands streets and their more or less recent state, have two changes in their brains: they have a dedicated brain area that helps with navigation and their hippocampus is bigger and more dense than hippocampus of regular people of their age and comparable lifestyle. Hippocampus is the brain's system to transfer knowledge from short term memory to long term memory. If you do not have enough physical activity, it shrinks with age. In other words, London taxi drivers are slightly more young brain-wise than people of their age. Trying to have your memory fresh and live is good for your health.