Last month, I did my first extended fast. I’d heard all of the benefits of fasting but hadn’t tried anything longer than 24-hours before. The original plan was to do a 3-day fast. But by the end of day 3, I was feeling great and decided to keep going. I could’ve kept it going for longer but decided to save it for the next time.

I wrote a blog post to go along with this video to explain a few things in more detail.

First extended fast blog post - https://danielbourke.ghost.io/4-day-f...

Warning: Remember, anything you see, hear or read here is not medical advice. Before trying an extended fast of your own, do your research and/or talk to your doctor.

Other Links Mentioned
Accu-Chek Guide blood glucose meter 1 - https://amzn.to/2Hp9LEy
Contour Next blood glucose meter 2 - https://amzn.to/325085Y
Blood ketone meter - https://www.ketosupplies.com.au/produ...
My Personalized Nutrition Experiment Table - https://airtable.com/shrmcmBd7Z66yPgtY
Does Fasting Burn Muscle by Dr. Jason Fung -   / does-fasting-burn-muscle  
Jason Fung's articles -   / drjasonfung  
Jason Fung's The Obesity Code Book - https://amzn.to/2O8plbX
Peter Attia articles - https://peterattiamd.com/
Zero Fasting app - https://zerofasting.com/
Fasting and Ghrelin -   / does-fasting-cause-or-cure-hunger  

Get email updates on my work - https://bit.ly/mrdbourkenewsletter
Support on Patreon - https://bit.ly/mrdbourkepatreon

Timestamps
0:03 - Day 1 of fast
2:08 - Glucometer unboxing
8:18 - Personalized nutrition experiment setup
11:43 - Fasting and fed state
12:26 - Gluconeogenesis
13:54 - Fed state explained
15:29 - Day 2 of fast
18:29 - Normal blood sugar levels
19:06 - First blood ketone increase
21:06 - Hunger hormone Ghrelin discussion
22:48 - 50-hour mark
22:48 - Zero fasting app introduced
25:20 - Officially in ketosis
25:41 - Day 3 of fast
26:40 - Acquired ketone meter
27:24 - Extending the fast an extra day
29:25 - First electronic blood ketone measurement
30:39 - 72-hour mark
32:28 - Staying in ketosis discussion
32:57 - Day 4 of fast
35:05 - 93-hour mark
37:21 - Training BJJ after 4-days without food
37:49 - 96-hour mark
39:24 - First meal in 4-days
40:45 - Day 5 (after fast)
41:47 - First blood measurements after breaking fast
42:23 - Going through data I collected during the fast
44:37 - Blog post on the fast discussion

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