Student or Learner
being asleep is sometimes more exhausting than being awake / or / sometimes it is more exhausting to sleep than being awake.
which of these sentences is more accurate
The first is more grammatically correct.
The second can be fixed? Sometimes it is more exhausting to sleep than to be awake.
All English sentences must start with a capital letter and end with the correct end punctuation.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.