Most people who quit carnivore do it in the first week. Not because the diet failed them. Because nobody warned them what was coming. The carnivore flu is a cluster of symptoms — headaches, fatigue, brain fog, muscle cramps, irritability — that hit during the first one to two weeks of the diet. It is not a sign something is wrong. It is a sign something is changing. The body is dismantling a decades-old fuel system and rebuilding it from scratch. That process has a cost. While the hormonal shift is crucial, let's focus on practical strategies for managing the adaptation phase. The key is maintaining electrolyte balance to mitigate symptoms like headaches and fatigue. Understanding this can make the transition smoother. The timeline has two distinct phases, Paolo. Days one through five are the acute phase. Glycogen depletes, sodium drops, and the brain screams for glucose it is no longer getting. Expect fatigue, dizziness, and sugar cravings that feel urgent. Days five through fourteen are the adaptation phase proper. The body starts upregulating fat-burning enzymes. Brain fog, muscle cramps, and insomnia dominate this window. By days eight to fourteen, energy stabilizes and cravings begin to fade. The system is learning a new language. Electrolyte balance is crucial. Sodium, potassium, and magnesium are vital. Sodium loss can cause early headaches, while magnesium and potassium depletion lead to muscle cramps. Addressing these can alleviate symptoms like brain fog and dizziness. Bone broth is an excellent source of hydration and electrolytes. Salt your food generously and consider magnesium supplements. Proactively managing electrolytes can prevent symptoms before they start. Cravings are their own challenge, Paolo. Sugar cravings peak days one through five due to carbohydrate withdrawal. Here is what most people miss: electrolyte intervention blunts those cravings quickly. The craving is often the body signaling a mineral deficit, not a genuine need for sugar. Eating enough fat during this window is equally critical. Fat provides the brain with energy during the transition and prevents the cognitive impairment that makes people reach for carbs. A gradual transition — slowly reducing carbs while increasing meat and fat — also reduces the severity of the entire flu. The body adapts more smoothly when the shift is not abrupt. Nausea may occur as the body adjusts to higher fat intake, typically resolving in a week. Insomnia can result from cortisol elevation and electrolyte imbalance. Understanding these mechanisms helps manage symptoms effectively. Here is what to carry forward, Paolo. The first thirty days of carnivore require two things above all else: patience and electrolyte management. Symptoms last three to fourteen days and are largely preventable when you address sodium, potassium, and magnesium from day one. By week two, the protein leverage effect kicks in, hunger drops naturally, and the body finds its new equilibrium. The adaptation phase is not a warning sign. It is the price of admission to a metabolic system that runs cleaner, steadier, and more efficiently than anything glucose ever delivered. Pay the toll. The road ahead is worth it.