STUDY: People with bad sleep habits also consume more calories

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(CBS News) — Researchers are learning why bad sleep habits can also lead to weight gain.

Volunteers in a study were allowed to sleep just 5 hours a night, which meant the required about 5 percent more energy to stay awake.

However, the participants consumed 6 percent more calories.

They also tended to eat smaller breakfasts and binge on after-dinner snacks, leading to a gain of nearly 2 pounds over 5 days.