The phrase "brain power" refers to the ability or capacity of your brain to think, learn, and solve problems. It represents the strength and intelligence of your mind. Full definition
I have realized that, although it doesn't take much actual time to manage my rentals, I do spend a lot of brain power on them. (pinefinancialgroup.com)
That's why exercise boosts brain power in sedentary populations like our own. (blog.fitplanapp.com)
A password manager will take a load off your mind, freeing up brain power for doing productive things rather than remembering a long list of passwords. (howtogeek.com)