07/28/2026
⏳ What Happens When You Fast?
Your body changes in fascinating ways as a fast progresses:
✨ 12 Hours• Insulin levels begin to fall.• Your body starts shifting from burning glucose to burning stored fat.• Metabolic flexibility begins to improve.
🔥 24 Hours• Glycogen (stored carbohydrate) becomes depleted.• Fat burning and ketone production increase.• Growth hormone secretion rises to help preserve lean muscle.• Autophagy (your cells’ natural recycling process) is thought to begin increasing, although the timing varies between individuals.
🧬 36 Hours• Ketone production increases further, providing an efficient fuel for the brain.• Autophagy is believed to be more active in many tissues.• Insulin sensitivity may improve.• Inflammation and oxidative stress may decrease in some people.
💙 Potential Longevity Benefits✔ Improved metabolic health✔ Better insulin sensitivity✔ Increased cellular repair✔ Reduced oxidative stress✔ Enhanced metabolic flexibility✔ Support for healthy aging
Remember: Fasting isn’t right for everyone. If you have diabetes, are pregnant, have a history of an eating disorder, or take medications that affect blood sugar, speak with your healthcare provider before starting a fasting program.
Autophagy InsulinResistance HormoneHealth Wellness DoctorTrish