Expert Q&A

Lost 3 and a half kg in my first 3 days…is this normal: what to track and how to measure progress

Understanding Rapid Early Weight Loss

Losing 3.5 kg in your first three days is completely normal and expected when you begin a structured plan like the one outlined in my book The CFP Reset. This initial drop is almost entirely water weight and glycogen, not fat. Each gram of glycogen stored in your muscles holds about 3–4 grams of water. When you reduce carbohydrates and increase activity, your body releases this stored fluid rapidly. For most adults aged 45-54 dealing with hormonal shifts, this can equal 2–5 kg in the first week. It is not sustainable fat loss, but it often motivates beginners who have failed every diet before.

True fat loss happens at a safer pace of 0.5–1 kg per week. Faster drops risk muscle loss, slowed metabolism, and rebound weight gain, especially when managing diabetes and blood pressure alongside weight.

What to Track Beyond the Scale

Relying only on the bathroom scale leads to frustration. Instead, track these four key metrics weekly. First, use a tape measure for waist circumference at the navel—aim to lose 1–2 cm per week. Second, monitor how your clothes fit and take progress photos in the same lighting every 14 days. Third, record energy levels, joint pain, and blood sugar readings if applicable. Finally, calculate your average weekly weight after the initial drop, ignoring daily fluctuations caused by sodium, hormones, or bowel movements.

In The CFP Reset, I emphasize a simple weekly scorecard that combines these measurements. This approach prevents the overwhelm of conflicting nutrition advice and builds confidence even when insurance won't cover programs.

How to Measure Real Progress Sustainably

Focus on non-scale victories that address your joint pain and time constraints. Walk 20–30 minutes daily at a comfortable pace instead of high-impact exercise that feels impossible. Strength train with bodyweight moves twice weekly to preserve muscle, which naturally declines in midlife. Log sleep and stress because poor recovery from hormonal changes sabotages fat loss more than calories alone.

Meal planning should be simple: prepare three balanced plates daily with protein, vegetables, and healthy fats—no complex recipes required for middle-income schedules. This method has helped thousands move past embarrassment about obesity by creating small, consistent wins.

Avoiding Common Pitfalls and Staying Consistent

Do not chase faster loss by slashing calories further; this backfires with metabolic adaptation. Re-feed with a higher-carb day every 10–14 days to replenish glycogen and keep thyroid function stable. If blood pressure or diabetes markers improve even while the scale stalls, celebrate that as progress. Consistency over three months typically reveals 4–8 kg of true fat loss plus reduced joint discomfort and better energy. Track everything in one notebook or free app to stay accountable without added stress.

💬 What the Community Says

The community shows mixed but mostly positive reactions to rapid 3-4 kg drops in the first few days. Many in the 45-54 age group report similar experiences when starting low-carb or structured plans, viewing the initial loss as encouraging after years of diet failures. Most agree it's largely water weight and emphasize shifting focus to measurements, energy, and how clothes fit. A common debate centers on scale obsession versus non-scale victories, with many sharing stories of stalled scales but improved blood pressure and joint comfort. Beginners often feel relieved seeing others confirm this pattern, though a vocal minority warns against expecting the same pace long-term and stresses sustainable habits over quick results. Overall, lived experiences highlight the emotional boost from early wins while cautioning against discouragement when progress slows.
Clark, R. (2026). Lost 3 and a half kg in my first 3 days…is this normal: what to track and how to. *CFP Weight Loss*. https://blog.cfpweightloss.com/ask/lost-3-and-a-half-kg-in-my-first-3-days-is-this-normal-what-to-track-and-how-to-measure-progress
Russell Clark, FNP-C, APRN
About the Author

Russell Clark, FNP-C, APRN, is the founder of CFP Weight Loss in Nashville and CFP Fit Now telehealth. Over 35 years in healthcare — Army Nurse Reserves, Level 1 trauma ER, hospitalist — he developed a 30-week protocol integrating real foods, detox, and low-dose tirzepatide cycling that has helped hundreds of patients lose 30–90 pounds. He and his wife Anne-Marie lost a combined 275 pounds using the same protocol.

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