Ho-to-to-gi-su
The early bird catches the worm.
Getting up early in the morning is good for us.
First, the fresh air is good for our health.
Next, you will be able to have enough time to do something till noon.
So you may get something good !
Human being is also one of the natural life, so it must be natural to lead a daily life according to the natural cycle.
P.S. I like hototogisu.
The older we become, the earlier to get up, I think.