Numerous other creatures, especially some whales and birds, also show a pattern of increasing brain size relative to their bodies over the past tens of millions of years. (discovermagazine.com)
No one knows whether the versions in question actually increase brain size, and the relationship between brain size and intelligence is also not clear. (discovermagazine.com)
In fact, improving our breathing could help to lower blood pressure, decrease stress, improve athletic performance, and maybe even increase brain size. (health.com)