What If You Stop Eating For 72 Hours? : 1375
The Human Upgrade: Biohacking for Longevity & Performance
Why 16-Hour Fasts Fall Short
Dave explains that 16-hour fasts mainly burn sugar and don't trigger deep repair or true fat-burning benefits.
Most people think fasting is just about skipping breakfast. But what if 72 hours without food could actually reverse aging?
In this video, Dave Asprey breaks down what really happens when you fast for 3 days—and why short fasts don’t reach the deep repair zone your body is built for. You’ll learn:
The 3 critical stages your body passes through during fasting
How autophagy turns on and begins cellular repair
What mistakes destroy your progress (like bad refeeding or skipping electrolytes)
How to properly prepare, fast, and recover safely
Why fasting can make your mitochondria stronger, your mind sharper, and your cells younger
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Timestamps
0:00 - Why 16-hour fasts don’t reach real fat burning
0:54 - The myth of aging and what doctors overlook
1:48 - How modern life damages your mitochondria
2:48 - How fasting restores your body’s repair mode
3:39 - Understanding the phases of fasting
4:58 - Why short fasts cut results short
5:34 - Day 1 of fasting
6:45 - Day 2 of fasting
7:22 - Day 3 of fasting
8:24 - Common fasting mistakes that harm your body
9:35 - How to prepare before your fast
10:31 - The right way to refeed afterward
11:14 - Listening to your body’s signals and responses
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