Lost 3 and a half kg in my first 3 days…is this normal during the weight loss plateau phase

What Rapid Early Loss Actually Means

Losing 3.5 kg in your first three days is completely normal—but it’s almost never fat. In my 20 years guiding midlife clients through the CFP Weight Loss Method, I see this pattern repeatedly. The majority of that drop comes from water weight and depleted glycogen stores. Each gram of glycogen holds about 3–4 grams of water; when you cut refined carbs or calories sharply, your body releases that fluid fast. For someone in their late 40s or early 50s dealing with hormonal shifts, this effect can feel even more dramatic because estrogen decline already affects fluid balance.

This is not the weight loss plateau phase. A true plateau usually appears after 4–8 weeks when scale movement stalls despite consistent effort. Your 3-day loss is the classic “whoosh” that often precedes the first real plateau. Understanding this prevents the panic that leads many to quit right when momentum is building.

Why Your Body Behaves This Way After 45

After age 45, hormonal changes make initial drops look bigger and subsequent fat loss slower. Insulin sensitivity decreases, cortisol can rise from life stress, and thyroid function often dips. These factors cause your body to cling to fat while happily shedding water. In the CFP Weight Loss Method I outline in my book, we teach clients to track measurements and energy levels rather than the scale during the first 10–14 days. A 3.5 kg loss might include 2–2.5 kg of water—perfectly healthy if you’re staying hydrated and getting enough electrolytes.

Joint pain often improves quickly once inflammation from processed foods drops, making movement feel possible again. That relief is more important than the number on the scale. Most of my clients with diabetes or blood pressure concerns see fasting glucose and BP readings improve within that same early window, even before significant fat is lost.

Turning Early Wins Into Sustainable Progress

To move past the inevitable plateau, shift focus to fat loss habits that insurance won’t cover but your body desperately needs. Aim for 0.5–1 kg of actual fat loss per week. This means a moderate 500-calorie daily deficit, 1.6–2 g of protein per kg of body weight, and resistance training twice weekly—even if it’s seated bands at home. My method emphasizes 15-minute movement snacks that fit busy schedules instead of hour-long gym sessions.

Watch for signs the rapid phase is ending: returning hunger, stable morning weight for 5–7 days, and tighter clothing despite the scale not moving. When that happens, recalculate calories, add a refeed day every 10–14 days, and increase daily steps by 1,000. These adjustments prevent metabolic slowdown that plagues repeated dieters.

Practical Steps to Avoid Common Pitfalls

1. Weigh yourself only once weekly after the initial drop. Daily fluctuations will drive you crazy. 2. Drink 3–3.5 liters of water and replace sodium, potassium, and magnesium—especially important if you manage blood pressure meds. 3. Log non-scale victories: better sleep, less joint stiffness, steady energy. 4. If loss exceeds 1 kg per week after week two, increase calories slightly to protect muscle. Following these principles from the CFP Weight Loss Method helps clients break through every plateau without feeling deprived or overwhelmed by conflicting advice.