yeah,stay up late really does much harm to your body,so for the sake of your health,don't try it.

I also agree with that staying up is bad for our health. However, I always think there are so many things that I have to finish, which makes me stay up almost every day. But I try to form a regular routine.

agree with u so much.stay up late often let me miss the tasty breakfast.sometime will miss the important messages or phone call.and I feel my memory is weaker and weaker. in a word, stay up late isn't a good habit. i have to sleep rightnow. goodnight and have a good dream.

Sure, stay up is not a good habit