The escalation of obese children is due to the upsurge of technology, increase in snacks and portion size of meals, and the decrease in the physical activity of children. If children were more mobile and less sedentary, the rate of obesity would decrease. Children have to put down the electronic devices and spend more time outside playing or exploring other options of physical acitvity. A study found kids that use electronic devices 3 or more hours a day had between a 17- 44% increased risk of being overweight, or a 10- 61% increased risk of obese (Cespedes 2011).[full citation needed] Parents have to recognize the signs and encourage their children to be more physically active. There are many programs designed to encourage activities such as Letsmove.gov, a program launched by the first lady, Michelle Obama to help combat problems with this epidemic of obesity.