But writing the book gave Ms. Snyder more than a mental workout.

Business people who want to test the idea of a mental workout can do so easily without calling in a consultant.

Physical challenges require intense concentration and focus, which is a great mental workout.

His scores have shot up, a defense expert said, thanks to the mental workout his participation in years of litigation gave him.

It is made to order for audiences in flight from the grueling mental workout of television sitcom.

That is, if you put it through the proper mental workout.

It offers both an outstanding physical and mental workout.

Not to mention getting a mental and physical workout.

As a game to play, it was much faster, and I enjoyed the mental workout it gave.

Maybe I should go for a mental workout too.