Schedules · Gentle start · 12 h window
12:12
Twelve hours either side of the clock. For many people this is close to how they already eat — the difference is that the window is drawn deliberately rather than left to the evening.
One example day
Eat between 08:00 and 20:00, then fast 12 hours until 08:00 the next day. Any window that fits your day works the same way.
The phases a 12-hour fast reaches
- 0 hBlood sugar settlesDigestion finishes; most notice nothing
- 4 hStored glucose declinesHunger comes in waves
- 8 hFat burningMore fuel drawn from stored fat
The fast ends in fat burning. What happens at 12 hours
12:12 is one of the app’s presets. Set it as a routine with a reminder before each fast.