Jun 12, 2014 7:36 PM by Posted By: Annie Snead, Credit: NBC
Parents often worry their kids' brains will turn to mush during summer vacation.
But new research suggests it's their waistlines that may be problematic.
A review of research from Harvard explored why kids tend to gain weight during the summer months. Experts speculate that it's because instead of running around outside, they're sitting around, bored and without structure in their day.
Experts also say kids are less likely to have regular bedtimes during the summer and eat more junk food.
Studies have shown the link between weight and summer months is greater among teens, minority groups and those who were overweight to begin with.