You generally cannot lose weight by going to bed early alone, but it can help with weight loss.
Early to bed for weight loss can play a supplementary role, more conducive to weight loss. If you just do sleep early, but do not control the dietary calorie intake, also did not take some aerobic exercise, generally will not play a weight loss effect.
If you simply go to bed early, without strict control of dietary calorie intake, you will not be able to play a role in weight loss. But if in the early bedtime on the basis of low-calorie diet, and with some aerobic exercise, such as running, swimming, jumping weight loss exercise, etc., can play a better weight loss effect.
Therefore, if you want to play the effect of weight loss by going to bed early, you can only achieve the purpose of weight loss with a balanced diet and proper exercise.