Sixteen-eight helps some people eat less. For others, it just makes them anxious and hungry. Test it for two weeks.
Intermittent fasting has been wrapped in claims about hormones, longevity, autophagy, and metabolic flexibility. Strip those away, and what remains is a simple, useful eating pattern: confining your meals to a defined window, most commonly eight hours, which often results in lower total calorie intake.
For people who naturally graze and snack, this is genuinely helpful. Removing the morning calories or the late-night ones can produce a deficit they would not otherwise hold. For people who train hard, sleep poorly, or have a history of disordered eating, fasting often backfires. They eat the same calories crammed into less time, sleep worse from late-evening hunger, and feel anxious about food in a way that did not previously exist.
The right test is two weeks. If you feel sharper, less hungry, and more in control, keep it. If you feel obsessed with your eating window or you bonk in workouts, drop it. Fasting is a tool, not a religion, and not the only way to eat.
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