Fasting Timer
Track your fasting progress in real-time and monitor the physiological milestones you reach along the way.
Fasting Duration
Fasting Milestones
Growth Hormone Levels Increase
Human growth hormone (HGH) levels start to rise, promoting fat burning and muscle preservation.
Fat Burning Mode Activated
Your body has depleted most glycogen stores and begins to rely more heavily on fat for energy.
Ketosis Begins
Your liver starts producing ketone bodies from fat, which serve as an alternative fuel source for your brain.
Autophagy Increases
Cellular cleanup process (autophagy) begins to ramp up, removing damaged cellular components.
Autophagy Peaks
Autophagy reaches significant levels, promoting cellular renewal and potentially reducing disease risk.
Immune System Reset Begins
Your body starts to recycle old immune cells and generate new ones, potentially strengthening immunity.
Growth Hormone Increases by 500%
HGH levels can increase up to 5 times their baseline, promoting tissue repair and fat metabolism.
Immune System Fully Reset
Studies suggest a complete renewal of the immune system may occur after 72 hours of fasting.
Tips for a Successful Fast
Stay Hydrated
Drink plenty of water throughout your fast. Add a pinch of salt for electrolytes during longer fasts.
Black Coffee & Tea
Plain black coffee and unsweetened tea are generally acceptable during fasting as they contain minimal calories.
Manage Hunger
Hunger often comes in waves and passes. Stay busy and distracted when hunger strikes.
Break Fast Carefully
Break your fast with a small, easily digestible meal. Avoid large, heavy meals especially after extended fasts.
Track Your Fasting Progress
Keep a record of your fasting sessions and monitor your progress over time with our tracking tool.
Go to Tracking