Dave Asprey is an American entrepreneur and author. He has founded Bulletproof 360, Bulletproof Nutrition, along with many other companies. He is well known for introducing the world to Bulletproof Coffee. He has written five books. Men's Health described Asprey as a "lifestyle guru.

Read Dave’s new book, Fast This Way, available everywhere.

Also have Dave teach you (live) how to fast at fastthisway.com.