One in three cooped-up parents struggle to cope in the winter months and are counting down the days until summer, according to new research. From the difficulty of entertaining kids indoors to the battles with the elements out of the home, the study of 2,000 parents examined the extent to which the winter season impacts American families. The research was conducted by market researchers OnePoll and commissioned by the U.S. Highbush Blueberry Council. A spokesperson for the U.S. Highbush Blueberry Council (USHBC) said, “The winter months have their charms, but it really can be difficult for families to stay as active as they’d like – or eat as healthfully. Timely advice, since parents shared that the most popular ways to beat the blues start in the kitchen: drinking warm beverages like coffee, tea and hot cocoa (61 percent) and eating comfort foods (60 percent).