from what I’ve read, 7.5 hours seems to be not enough sleep
Sleep requirements are individual and vary widely. The 7.5 hours is just the mean of a fairly wide distribution.
As a data point, I live in a house with someone who requires about two hours of more sleep per night than I do.
Sleep requirements are individual and vary widely. The 7.5 hours is just the mean of a fairly wide distribution.
As a data point, I live in a house with someone who requires about two hours of more sleep per night than I do.