Spending a full day in very hot or very cold rooms doesn’t make people eat more or less food overall, even though their bodies react to the temperature.

When it’s hot, people eat more cold dishes and drinks; when it’s cold, they eat more hot, hearty meals—even if they don’t eat more calories overall.

When it’s hot, people want colder and lighter foods more; when it’s cold, they crave warmer and fattier foods—even if they don’t eat more overall.