It isn't a necessity to keep your eyes closed. Some have better success keeping them open.
Although, the crack of light may throw you off anyway. Maybe turn off the light outside your door, and/or cover your eyes somehow?
Leave them open, or if they're closed and then open you won't notice a difference if it's pitch black.
Although, the crack of light may throw you off anyway. Maybe turn off the light outside your door, and/or cover your eyes somehow?
Leave them open, or if they're closed and then open you won't notice a difference if it's pitch black.