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The study was a small
one. The researchers looked at the eating
of five women and 11 men between the ages of 25 and 59. All of the
had a high body mass index (BMI). They were all in the overweight or
BMI range. All of the people were in good health. They ate breakfast
and exercised a little. For two weeks before each test, the participants did not drink coffee or
. They also did not smoke or take any
or drugs. They all had to keep a sleep
so researchers knew their sleeping and waking
. Researcher Professor Kelly C. Allison said: "I think what the study is telling us is that it probably really is
to stop eating late into the night."