Children who sleep little? Attention to their weight, because less time devoted to sleep in childhood, is more prone to the accumulation of weight. In short, the little children who do not sleep enough are at risk of becoming beautiful chubby, or even obese, even at 7 years. If your child seems a little 'too much meat for her age, try to imagine if, perhaps, among the causes of the tendency to gain weight there was also a general tendency for sleep disturbance in previous years.