Tim Ferriss is an American entrepreneur, angel investor, author, and podcaster, recognized for his work in lifestyle optimization and self-improvement. He is the author of five #1 New York Times and Wall Street Journal bestsellers, including 'The 4-Hour Workweek,' 'The 4-Hour Body,' and 'The 4-Hour Chef.' Ferriss also hosts The Tim Ferriss Show podcast, which was the first business-interview podcast to exceed 100 million downloads and has accumulated over 1 billion downloads.