>>508913909
It means not eating anything for 7 days, but drinking only water (or unsweetened coffee/tea/infusions). At most, to avoid electrolyte imbalances, you can drink water and lemon with a little salt once, but nothing that contains calories. Furthermore, once this is done, it would be advisable to take certain dietary measures such as intermittent fasting and possibly a low-calorie diet with few carbohydrates. Some supplements can also be useful, such as vitamin D3 for the immune system and antioxidants.