I know various descriptions of sleeping

I read a book about to become a short sleeper last year.

That book says "Sleeping time a day is three enough." and "You can spend another time effectivity on your hobbies and learning.".

I thought so good when I read that book for the first time.

because I didn't have enough free time every day for my work and childcare.

So I try to stay awake at night.

I'm used to staying awake at midnight now.

But I wanted to study although I sometimes fell asleep early instead.

I really want to sleep about eight hours

I usually let my kids sleep until 9 pm every weekend.

I start to study downstairs when my kids fall asleep.

But I sometimes fall asleep with my kids.

After all, I woke up at 8 am the next morning.

That means I spent over 8 hours sleeping.

That one day, I felt so good and my health was very good although I couldn't study enough.

One famous person says "Removal sleeping time is ridiculous.".

Another person says "Sleeping time a day is three enough.".

Which is true? Is both true? Does it depend on me? I'm suspicious of both.

Sleep OR Awake

I'm happy if I can sleep when I want to sleep.

I want to live like that someday.

But I have to stick it out responsible for the work.

I can't stand in the way of someone because of me.

So I won't give it a shot... Is it okay?

No, I want to change my life and condition.

So I'll find out how to get my free time.