This is because your brain produces alpha waves soon after waking up.
What are morning pages?
“Morning pages” just as the name suggests are journal pages written in the morning.

Cameron explains on herwebsitethat the practice involves writing three full pages longhand (no typing allowed!)
at the very beginning of each day.
It’s also crucial to not share the pages with anyone else.

They should be kept private so that you feel comfortable writing freely, without fear of judgment.
And remember, you must do three pages no more and no less.
“Ordinarily, the first page and a half [are] pretty easy,“Cameronacknowledged.

“The second page and a half [are] more difficult, but it moves us into action.
More than three pages invite self-obsession.”
A2005 research articlepublished in Advances in Psychiatric Treatment confirms the psychological benefits of journaling.