Expert Q&A

Lost 3 and a half kg in my first 3 days…is this normal — what do certified weight loss coaches recommend?

Understanding Your Rapid 3.5 kg Drop

I see this pattern constantly with new clients aged 45-54. Losing 3.5 kg (about 7.7 lbs) in three days is normal but rarely reflects true fat loss. In my book The CFP Reset Method, I explain that the majority of this initial drop comes from water weight and depleted glycogen stores. When you reduce carbohydrates and sodium while increasing water intake, your body releases stored fluid—often 2-4 kg in the first 72 hours. This is especially pronounced if your previous diet was high in processed foods.

For women in perimenopause or those managing diabetes and blood pressure, hormonal changes amplify fluid fluctuations. The good news? This early momentum can build confidence, but it’s critical not to chase it. True fat loss averages 0.5-1 kg per week for sustainable results without muscle loss or metabolic slowdown.

What Certified Weight Loss Coaches Recommend Next

Certified coaches following the CFP methodology prioritize metabolic health over scale drama. First, track your measurements and energy levels rather than daily weigh-ins. Second, focus on a moderate calorie deficit of 500 calories below maintenance while emphasizing protein (1.6-2.0g per kg of ideal body weight) to preserve muscle. For joint pain that makes exercise feel impossible, we start with gentle daily walks of 20-30 minutes and resistance band work at home—no gym membership required.

Avoid the trap of overly restrictive plans that insurance won’t cover anyway. Instead, build simple habits: a high-protein breakfast within 90 minutes of waking, consistent sleep of 7-8 hours, and stress management through 10-minute breathing exercises. These address the hormonal changes making weight harder to lose after 45. In week two, recalibrate your intake based on real hunger cues rather than rigid meal plans that overwhelm middle-income schedules.

Preventing Rebound and Building Long-Term Success

The biggest mistake beginners make after an impressive 3-day loss is returning to old habits once the water weight stabilizes. My CFP approach uses a 4-phase cycle: Reset, Rebuild, Refine, and Maintain. During Rebuild, we slowly reintroduce healthy carbs while monitoring blood sugar—crucial for those managing diabetes alongside weight. Expect 0.5-1 kg weekly loss after the initial drop; anything faster often leads to the yo-yo cycle you’ve experienced before.

Stay consistent with hydration (at least 3 liters daily) and electrolyte balance to reduce joint discomfort and fatigue. If embarrassment about obesity has kept you from asking for help, remember certified coaches create judgment-free plans tailored to real life. The 3.5 kg is a signal your body responds to change—now let’s make that change permanent through smart, evidence-based adjustments rather than extremes.

Action Steps for Your Next 30 Days

1. Weigh yourself once weekly under consistent conditions. 2. Log protein and water intake daily using a simple phone app. 3. Incorporate two 15-minute strength sessions weekly to protect metabolism. 4. Schedule a non-scale victory review at day 30 focusing on energy, clothing fit, and blood pressure readings. Following these principles from The CFP Reset Method helps most clients in your age group lose 8-12 kg in 90 days without feeling deprived or overwhelmed.

💬 What the Community Says

The community shows mixed but mostly positive reactions to rapid 3-4 kg drops in the first few days. Many middle-aged beginners on forums like Reddit’s r/loseit and Facebook weight loss groups report similar experiences, calling it “whoosh” water weight that motivates them after years of failed diets. Most practitioners find it levels off by week two, with steady 0.5-1 kg weekly losses following. A vocal minority worries it signals unsustainable restriction or muscle loss, especially those with joint pain or hormonal issues who fear rebound gain. People managing diabetes frequently note improved blood sugar alongside the scale drop but stress the need for coach guidance since insurance rarely covers programs. Overall sentiment leans toward viewing early losses as normal and encouraging when paired with protein-focused eating and light movement, though experienced users warn against obsessing over daily numbers. Many share embarrassment turning to relief once they realize it’s physiology, not magic or failure.
Clark, R. (2026). Lost 3 and a half kg in my first 3 days…is this normal — what do certified weigh. *CFP Weight Loss*. https://blog.cfpweightloss.com/ask/lost-3-and-a-half-kg-in-my-first-3-days-is-this-normal-what-do-certified-weight-loss-coaches-recommend
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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