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What strengthens the brain the most?
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I have my doubts about the seriousness of that study. Only 3,000 test persons have been tested. Who tested them? Who funded that test? Why only such a small test sample? Are those people ethnically different?
There are numerous questions that remain unanswered. Personally I am a non believer. I may change my opinion if there are multiple independent studies with 100,000+ test subjects.
There are several other medical studies about remaining young and with that, keeping your brain active. Studies involving cellular senescence under the guidance of the M**o Clinic pretend to have been able to slow aging with cellular senescence.
@sage2021 Siri? I would very much like to have a super brain. How do I get one?