Staying up late on weekends may drive excess weight gain in school-aged children, possibly due to “social jet lag” disrupting their ability to process food efficiently.
Previous research suggests that children who get less than the recommended amount of sleep per night are more likely to become overweight, but less is known about the effect of inconsistent bedtimes.
To learn more, Heli Viljakainen at the University of Helsinki, Finland, and her colleagues took body …