Preparation
This app is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified healthcare provider before starting a prolonged fast, especially if you have any medical condition or take medication.
When not to fast
It is best not to start if any of the following apply to you:
IllnessFever, infection, or flu means your body needs all its energy to heal. Fasting now will only slow down your recovery.
Low body weightIf your BMI is under 18.5, your body does not have enough reserves for a safe long-term fast.
Eating disordersIf you have a history of anorexia or bulimia, strict fasting can easily push you in the wrong direction.
Pregnancy and breastfeedingBoth you and the baby need a steady supply of nutrients during this time; fasting is not an option right now.
Type 1 diabetesDue to blood sugar fluctuations, this can only be done under strict medical supervision.
MedicationsDo not fast alone if you take insulin, blood pressure, or blood-thinning medication, as the changes can amplify the effects of the drugs.
Gallbladder and kidney issuesRising uric acid levels can trigger gout or gallbladder attacks if you are prone to them.
Timing the start
It is best to have your last meal at 7 PM. This way, you sleep through the first 12 hours while your body burns through remaining sugar. You will wake up with a significant result already, which is a great mental boost. Plus, your fast will also end in the evening, allowing you to rest after a light meal.
The last supper
The start will be much easier if you skip carbs (pasta, bread, sugar) in your last meal. Instead, eat plenty of healthy fats and protein: a good steak, salmon, or a rich omelet helps your body switch to fat-burning faster and without hunger spikes.
The starter kit
The secret to success is replenishing salt, potassium, and magnesium. Get high-quality sea salt, potassium chloride, and magnesium glycinate. Sparkling water and high mineral content help fight hunger, while black coffee and mint or ginger tea will be your best friends during the empty hours.
When to stop?
Stop the fast immediately if you experience heart palpitations, persistent chest pain, fainting, or prolonged vomiting. No goal is worth more than your health.