Your Organs when you Fast for 36 Hours

Your Organs when you Fast for 36 Hours
A 36-hour fast causes your body to shift from using glucose to burning stored fat for energy. During the first 24 hours, the liver uses its glycogen stores to maintain blood sugar. As these stores become depleted, the body begins producing ketones from fat, which the brain and other organs can use as fuel. Insulin levels decrease, glucagon increases, and fat burning becomes more active. While some people may experience improved focus, others may feel hungry, tired, or develop headaches. Staying hydrated is essential during a prolonged fast.