By Jessica Hamzelou
Lower stress levels and exercise may help your brain stay youngTaiyou Nomachi/Getty Your brain isn’t necessarily the same age as the rest of you. Now, it may be possible to predict how quickly a person’s brain will age throughout life based on tests taken when they are 3 years old. A person’s biological age may be a better indicator of their health than their chronological age. Brain age can be measured using brain scans and machine learning to determine if a person’s brain looks older or younger than the average healthy brain for people of the same …