Going to bed late negatively impact to body for many reasons. First, going to bed late causes obesity. In lack of sleep affects the Glycerin hormones will stimulates hunger, increased to 28%. In addition, It also affect Leptin hormone. When the level of Leptin Down It makes sense to want more food. Despite not eating until enough power already. Second, such behavior cause mental problems. Because the least sleep causes hormone is not fixed .so the people who sleep less have emotional stress and anxiety is easy. Moreover, Brain and nervous system is not fully functional, resulting in a less emotional control. Third, going to bed late causes skin problems. The body effective drive in waste less and our body will produce the hormone cortisol. Either,This hormone is to inhibit the collagen in the skin, make the skin not bright. In conclusion, Going to bed late negatively impact to body make to obesity, mental problems and skin problems. So you want healthy, you must not going to bed late.