Five pounds in five days is achievable, but the honest breakdown matters: most of it is water and glycogen weight, not fat. Useful for a specific-date goal (photoshoot, wedding, reunion) but not a sustainable approach to weight loss.

What's actually happening

• 1-3 lbs of water weight released from reduced carb intake (each gram of glycogen holds ~3g of water).
• 1-2 lbs of gut content from reduced food volume.
• 0.5-1 lb of actual fat — the absolute ceiling at a meaningful deficit for 5 days.

The scale reads 5 lbs down; the mirror reads noticeably different because water weight affects appearance significantly. But two days of normal eating brings most of it back.

The 5-day protocol

• Protein at every meal. Preserves muscle during rapid loss.
• Under 100 g carbs daily. Depletes glycogen; drops water weight.
• 2.5+ L water daily. Counterintuitive but true — hydration reduces bloat.
• Limit sodium. High sodium drives water retention; low sodium drops it.
• Daily movement. 45-60 min walking depletes glycogen faster.
• No alcohol. Major water-retention driver.
• No processed foods. Removes hidden sodium and sugar.

What this plan is for

A specific-date goal where appearing leaner for one day is what matters. Not fat loss — aesthetic loss. After the event, expect 3-4 of the 5 lbs to return within a week as water weight rebounds.

For real weight loss

See the 4-week plan instead. Real fat loss is 0.5-1 kg per week; faster is usually water weight that will return.