You should keep regular hours.
burn the candle at both ends
You're burning the candle at both ends. A man can not work night and day with impunity.你过分消耗精力了，一个人不可能夜以继日地工作而不生病的。
I appreciate your invitation.
A: I'd like to invite you to a party tomorrow. Can you make it?
B: Of course. That's wonderful. I appreciate your invitation.