Mr. Stingray さんに聞きます。
How many hours of sleep do you think is necessary for people of your age?
大概の不眠を訴える方はすごく「欲張り」といいますか・・・
8時間ばっちり寝ないとだめだと思い込んでいる方が多いのです。しかし
Stingray さんのように70歳代の方は・・・
From 6 to 7 hours is enough for elderly people.
Excessive time in bed may disturb your quality of sleep at night.
Do you feel sleepy during the day time?
または
Do you feel daytime sleepness?
It is okey to sleep for a short time at the daytime, within one hour, from 1 to 3 o'clock.
You might be anxious that if you sleep in the day time, you would not be able to fall asleep at night.
However, you don't have to worry about that.
Taking a nap for a short time doesn't disturb your sleep at night. In fact, it helps to avoid the risk for dementia.
Do you go to bed in order to sleep earlier than usual?
もっと寝ようと思って、どんどん寝床に入る時間がはやくなっていませんか？
It is said, that the longer you stay in bed, the poorer the quality of your sleep will be.
Stingrayさん、わかってくれるといいのですが・・・。