your ability to multitask changes as you age.
in a new study, researchers from japan and the u-s monitored blood flow in the brains of young and older adults as they performed physical, mental and combination tasks.
they found older adults needed more blood in their brain when completing the combination task.
researchers say this is a sign the older brain needs to work harder to multi-task. they are planning more studies to see if training exercises that combine mental and physical tasks can help keep the brain young.