Going to bed late negatively impact to body. First, going to bed late causes obesity. In lack of sleep affects the Ghrelin hormones. It will stimulates hunger increased to 28%. In addition it also affect Leptin hormone. When the level of Leptin hormone down, it makes sense to want more food. Second, such behavior cause mental problems. The least sleep causes hormone is not fixed, so the people who sleep less will have stress and anxiety easy. Moreover, Brain is not fully functional resulting less emotional control. Third, going to bed late causes skin problems. As the body effective drive in waste less and our body will produce the hormone cortisol, it inhibit collagen in skin and make 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