By Janice Neumann (Reuters Health) – Children who don’t get enough sleep might be more tempted by food, a new study suggests. The children who slept less than 11 hours at night also had a higher body mass index – a measure of weight in relation to height – than those who slept 11 hours or more. The Centers for Disease Control and Prevention recommends 11 to 12 hours of sleep for pre-school children.