In July 1968, John B. Calhoun, an American research psychologist, once did a very important research on the effect of open space on your brain. The test, naturally, included rats, not humans yet his outcome were widely regarded to be a appropriate. Here’s what he did.

He put four pairs of mice into a utopian world. There were no predators, no inadequacy of food or drinks and obviously, no scarcity of mating partner. Bottom line is these mouse had anything they desire – with the exception of space.

At first, each thing looks just great. The mouse lived as they are suppose to be. Their population grew rapidly, doubling around every fifty-five days. Very soon, when the number of the mouse reached 620, the area he was placing them in became full. That was day 315 of the test. Surprisingly, the number of mouse began to drop since then… to a point where the last existing birth was at day 600. During this period of time, between day 315 to day 600, the mouse behaved intermittently.

No longer did guys protect their boundary and females. No longer did they engage in courtship or physical encounter. Instead they withdrew to be anti-social, and groomed themselves. Due to their lack of scars and healthy fur, these number of guys were named “the charming ones”.

The girls, on the contrary, become more and more hostile, reluctant to give birth and expelled their junior before weaning was finished. After day 600, the number of rats began to decrease into extinction.

Sound familiar? Redundant to mention, these mouse are extremely depressed during this period of time. Did the insufficient space and advancing population density altering your psychology? Who knows? Maybe so, maybe not. Yet supposing that you are similar me, you wish to find out.

Try this out: At worst once a week, walk to an open area. Be it a field or out of town. Many people feel happy, kind of a liberation when in open area. No mental exercises or brain training exercises can substitute this.

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