Bulletproof founder and former CEO Dave Asprey talks about the invention and current state of “biohacking," how his blog for “bulletproof executives” grew into a global lifestyle, and the most important ways to track and improve one’s life. Asprey explains how intermittent fasting works — but may not be right for everyone seven days a week — and says that quality of sleep is more important than quantity: Getting 8 hours of sleep every night is “garbage science,” he claims. He also discusses cryotherapy, meditation, the cutting edge of aging and brain research, and his goal of living to be 180 years old. Featuring: Dave Asprey (@bulletproofexec), founder and former CEO, Bulletproof Host: Kara Swisher (@karaswisher), Recode co-founder and editor-at-large More to explore: On Reset, Arielle Duhaime-Ross explores why — and how — tech is changing everything. On Recode Media, Peter Kafka interviews business titans, journalists, comedians and podcasters about the collision of tech and media. On Pivot, Kara Swisher and Scott Galloway talk about the big tech news stories of the week, who's winning, who's failing, and what comes next. And on Land of the Giants, Jason Del Rey chronicled the rise of Amazon. Season 2 will focus on Netflix and is coming soon! About Recode by Vox: Recode by Vox helps you understand how tech is changing the world — and changing us. Follow Us: Newsletter: Recode Daily Twitter: @Recode and @voxdotcom