The breed as a whole is very physically and mentally active.

The aging general remained mentally active until his death by spending his time writing, editing, and reading.

He found Blake up, dressed, and resting after the effort, but mentally active.

The more mentally active the person was, the longer it took for the onset of accelerated memory decline to show up.

The doctor who conducted the study thinks that brain exercises help the elderly remain mentally active.

"People are continuing to learn and stay mentally active instead of vegetating," he said.

Being mentally active and learning new skills during middle adulthood and as you age is speculated to lower the risk of Alzheimer's disease.

During the latter part of 1942 he spent most of the time in bed, mentally active but physically weak.

I keep myself mentally active and physically fit.

The rise in life expectancy is a positive development, keeping people physically and mentally active for longer.