# A Fasting Clock Does Not Create a Deficit. Log the Window.

> 16:8 still fails if the eight hours are 3,000 calories. Option 1 is Khatwa: photograph the meals in the window, ask what is left. We do not cite a fake Obesity Reviews paper.

The problem is a clock sold as a diet. Sixteen hours empty does not cancel 3,000 calories in the other eight. The window can help you skip a meal. It cannot invent a deficit. We do not cite a 2024 Obesity Reviews meta-analysis with 1.2 kg versus 3.8 kg. That paper is not on our desk. Option 1 is Khatwa. Photograph the meals that land in the window. See calories and protein. Ask the coach what is left before the second plate. Free on iOS and Android. A fasting-timer app is option 2 if you only want a countdown.

## What Khatwa does not do

It does not shame a skipped breakfast. It also does not auto-split macros across a 16:8 protocol. You log what you ate. The leftover number is the plan. Late-night calories still count: [late calories still count](https://www.khatwa.se/en/blog/circadian-rhythm-fasting-sleep-biometrics.md). Deficit math: [calorie deficit explained](https://www.khatwa.se/en/blog/calorie-deficit-explained.md).

### Log the hours you actually eat

Photograph the window. Ask what is left. Free.

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