[pcurve]

If you’ve been doing if for many years chances are you are one of those folks who don’t need as much sleep. Apparently there is genetics involved

https://www.nih.gov/news-events/nih-research-matters/gene-id...

[inanutshellus]

It's more concerning if he intentionally deprived himself of sleep during adolescence (e.g. forcibly staying up to play video games), as brain development continues through age 25.