Traditional dietary assessment methods like 24-hour recalls and food frequency questionnaires do not accurately capture the timing of eating events, including occasional snacking.

“We can ask people, "When did you eat breakfast? When did you eat lunch, dinner?" but that doesn't give us the correct view because we often ignore the occasional eating or snacking that we might have done late at night or early in the morning. And we consider them to be benign and we don't report them.”