![Then as a mental exercise,
I invite you to figure out...
Then as a mental exercise,
I invite you to figure out...](https://content2.mcqstudy.com/ss/tbbt-4-22-00:11:23.985.jpeg)
Then as a MENTAL exercise,
I invite you to figure out...
The Big Bang Theory Season 4, Episode 22
![You need to push your brain out of its
comfort zone and reach mental exhaustion.
You need to push your brain out of its
comfort zone and reach mental exhaustion.](https://content2.mcqstudy.com/ss/tbbt-10-22-00:04:02.284.jpeg)
You need to push your brain out of its
comfort zone and reach MENTAL exhaustion.
The Big Bang Theory Season 10, Episode 22
![who don't have mental problems.
who don't have mental problems.](https://content2.mcqstudy.com/ss/tbbt-9-10-00:14:07.806.jpeg)
who don't have MENTAL problems.
The Big Bang Theory Season 9, Episode 10
![And with that mental picture,
I think we're done for the evening.
And with that mental picture,
I think we're done for the evening.](https://content2.mcqstudy.com/ss/tbbt-4-4-00:05:03.341.jpeg)
And with that MENTAL picture,
I think we're done for the evening.
The Big Bang Theory Season 4, Episode 4
![Well, clearly mental tasks are not enough.
Well, clearly mental tasks are not enough.](https://content2.mcqstudy.com/ss/tbbt-10-22-00:05:55.189.jpeg)
Well, clearly MENTAL tasks are not enough.
The Big Bang Theory Season 10, Episode 22