Hourly Benefits of Fasting
Stage 0
0-12 Hours
Digesting Food
Insulin Peak

Stage 1 
12-18 Hours
Fat Burning Begins
Insulin Falling

Stage 2
18-24 hours
Ketosis Begins
Glucagon Rising 

Stage 3 
24-48 hours
Autophagy Begins
Brain Cleaning

Stage 4
48-54 hours
HGH Surge
Inflammation Falls

Stage 5
54-72 hours
Insulin Sensitizing
Autophagy Peak


Stage 6 
72+ hours
Stem Cells Forming
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