
From the creator of Bulletproof Coffee and author of the bestselling The Bulletproof Diet comes a revolutionary plan to upgrade your brainpower--in two weeks or less. For the last decade, Silicon Valley entrepreneur Dave Asprey has worked with world-renowned doctors...

From the creator of Bulletproof Coffee and author of the bestselling The Bulletproof Diet comes a revolutionary plan to upgrade your brainpower--in two weeks or less. For the last decade, Silicon Valley entrepreneur Dave Asprey has worked with world-renowned doctors...

From the creator of Bulletproof Coffee and author of the bestselling The Bulletproof Diet comes a revolutionary plan to upgrade your brainpower--in two weeks or less. For the last decade, Silicon Valley entrepreneur Dave Asprey has worked with world-renowned doctors...


![Hirntuning: Die Bulletproof-Methode für höhere ... [German] 3742301195 Book Cover](https://m.media-amazon.com/images/I/512-SaqWN1L._SL500_.jpg)

From the creator of Bulletproof Coffee and author of the bestselling The Bulletproof Diet comes a revolutionary plan to upgrade your brainpower--in two weeks or less. For the last decade, Silicon Valley entrepreneur Dave Asprey has worked with world-renowned doctors...