Typically they present the situation as a mental exercise.

他们特别地将这种状况作为一个脑力训练提出。

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For starters, regular mental exercise may increase your life expectancy.

对于初学者而言，经常性地脑力训练可以延长寿命。

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Puncture a rigid mindset with a mental exercise called "paradoxical intention."

做一个叫做“矛盾的意图”的思维练习，打破刻板的习惯。

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Strategic thinkers get some of their best mental exercise at chess boards, poker tables and even shuffleboard courts.

FORBES: Magazine Article

In this mental exercise you are assuming that there is no mortgage.

FORBES: I, Landlord

Try doing this mental exercise over a 4 week period and you should notice an improvement in your short and long term memory.

FORBES: Mental Exercises to Help Improve Your Memory