That statement is exaggerated and a bit misleading.
Yes, your body can fluctuate in water weight by about 0.5 to 2 kg (sometimes a little more) in a day—but that doesn’t mean you’re “retaining excess fluid that needs to be removed.” Most of those changes are normal and temporary.
Common reasons your weight shifts quickly:
- Salt intake → more sodium = more water held temporarily
- Carbohydrates → stored as glycogen, and glycogen holds water
- Hydration level → drinking more or less water
- Hormones (especially in women)
- Digestion (food still in your system)
What actually helps balance water retention safely
If you feel bloated or “puffy,” these simple habits help your body regulate naturally:
- Drink enough water consistently (don’t restrict it)
- Reduce very salty packaged foods
- Eat potassium-rich foods (like bananas, yogurt, spinach)
- Stay physically active (walking helps circulation)
- Get enough sleep
- Keep meals balanced instead of extreme dieting
Important reality check
Trying to “flush out 2–3 kg of fluid fast” is not a healthy goal. Any rapid drop like that is usually just temporary water changes—not fat loss—and forcing it (like dehydration tricks or extreme diets) can actually make you feel worse and backfire.
If you want, I can help you understand what real fat loss progress looks like week to week so you don’t get misled by water-weight swings.