[tarekmoz]

I wonder for how long the experiment was done.

I found out that under-sleeping had a very bad impact on me after several months, not in a short/mid term. And I have the feeling this placebo effect would not be the same if you've been under-sleeping for months.

The original article link is broken though, too bad.

[mercer]

How do you tell that the 'bad impact' is due to under-sleeping, and what effects do you notice?

I have sleep issues with some regularity, so I'm very curious to hear of your experiences.

[tarekmoz]

This is just my gut feeling, things are probably more complex, but here's why I think sleep deprivation deeply impacts us:

I used to have a crazy schedule, commuting very early and coming back quite late at home, sleeping between 4 to 5 hours a day. I've noticed I was often in a bad mood, dropping things, feeling anxious. gaining weight and so on... After a couple of years I was feeling depressed and getting sick all the time.

Then I had a new job and started to work remotely from home, and started to sleep 8 to 9 hours per night. Both works were interesting, and commuting to the first one was done by train, so I think the only noticeable difference was the amount of sleep I was getting.

With more sleep, after a month, I became more focused in everything, the depression feelings went away, and had so much more energy. Overall I was more successful in what I was doing - happier and healthier.

I guess all of this sounds obvious, but going through it, making sure I get my 8-9 hours of sleep most of the time is something I am now careful about.