What you're saying is a myth that gets repeated like an old wives tale by people who never check it out.

https://en.wikipedia.org/wiki/Ten_percent_of_the_brain_myth

Oh, but I did check it out, spent 9 months doing nothing but yoga and meditation out in the forest; and there's definitely more in there just waiting to be activated.

Don't forget to gather up the world's leading neuroscientists and let them know that they're wrong because you 'checked it out' by doing nothing but yoga and meditation for nine months.

If you use 1% of your brain imagine what would happen if you’d use all of it.