18:6 Intermittent Fasting Timer

The 18:6 protocol is a natural progression after adapting to 16:8. You fast for 18 hours and eat during a 6-hour window — for example, 1 PM to 7 PM. The longer fasting window deepens ketone production, which many people report improves mental clarity and reduces hunger cues further. Research suggests that eating within a 6-hour window improves insulin sensitivity compared to longer windows, making 18:6 a popular choice for those targeting metabolic health as well as weight management. This timer tracks your 18-hour countdown from your last meal, shows you when your eating window opens and closes, and logs each session locally so you can monitor your consistency over time.