Probably, 1 percent of us can sleep short and suffer no consequences. Many of us don't get the sweet spot of 7 to 9, but recent data suggests that consistency of sleep and wake times may help us undo some of the badness of insufficient sleep. Here's what I recently wrote about the topic:

https://medium.com/beingwell/what-i-got-wrong-about-sleep-44e840985a4c

Thanks for reading the piece and for stopping by to comment.

Michael