Sleeping late have effects many reasons. First,your skin is not bright. It will look withered prematurely not only the body, but also face. Second, your body will exhaustion and unhealthy because the body does not get enough rest. Then you may patient-friendly. Finally, you might fat because the body secretion of cortisol. You will feel hungry easily and eat in that time. The digestive system is malfunction, and worked very hard. As a result, your weight is higher.