I am guessing that the 2.5% that needs under 8 hours of sleep is composed mainly of people in the tech industry. If I sleep under 5 hours I feel a bit groggy al

I am guessing that the 2.5% that needs under 8 hours of sleep is composed mainly of people in the tech industry. If I sleep under 5 hours I feel a bit groggy all morning, but if I sleep more than 6 ~ 6 1/2 hours, I feel like utter shit all day long. Incredibly, I was speaking about this same topic with some fellow coworkers and 5 (counting myself) out of 7 felt the same. It might be that they're bullshitting me or maybe the statistics are wrong, but the lack of sleep (as in the people that actually need less daily sleep, not the one's that do so because of lack of 'time') seems to have a correlation with professions that require staring at a screen all daylong. Anyways, in my experience, the number of people that need less than 8 hours of sleep is hugely over 2.5% of the population.