Siim Land is a best-selling author, public speaker, and consultant who teaches people about the art and science of optimizing their health and performance. He’s published five books on nutrition and biohacking and he’s a top speaker at the world’s largest biohacking conferences. Siim comes on the show to discuss metabolic autophagy, intermittent fasting, whether you can reach autophagy while fasting for 16 hours, hormesis, longevity tools, NAD, and more.  He also dives into his personal fasting protocol, how to find your own optimal fasting window, circadian rhythms,  his favorite biohacking techniques, and supplementing with glycine. Here’s a breakdown of what you’ll find in this episode: 00:00 Introduction to the Keto Answers podcast 00:31 Introduction to this episode’s guest, Siim Land 04:00 Why Siim uses fasting in his biohacking strategies and what this looks like for him 06:14 How many calories Siim consumes per day in his one meal a day (OMAD) approach 07:38 Can you put on muscle while fasting? 14:33 Are the different adaptations that happen during fasting due to the stress response it creates? 17:40 Hormesis and putting the body through different stressors 18:55 How to choose the right fasting protocol 24:56 One of the benefits of fasting that’s fascinating and not often talked about 26:28 What is autophagy? 31:19 Is autophagy an umbrella term that includes all different types of autophagy? 35:18 If you’re only fasting for 16 hours, are you reaching autophagy? 40:34 All about NAD, including what it is, the benefits of it, what increases it, and more 48:55 Siim’s top three favorite biohacking techniques 49:41 Glycine supplementation   Resources mentioned in this episode: Siim Land’s website Siim Land’s Instagram, Twitter, Facebook, and YouTube channel Siim’s books