https://www.thestar.com/news/insight/2016/01/16/when-us-air-...
The scientists also expected that a sizable number of pilots would be within the average range on all 10 dimensions. But even Daniels was stunned when he tabulated the actual number.
Zero.
Out of 4,063 pilots, not a single airman fit within the average range on all 10 dimensions.
Using their definition of "average range", which is the middle 30% (in height, waist circumference, etc), we should expect to find one such individual for every 1/0.3^10 = 169,351 people on average.
We let our kids stay up until they went to sleep at their own pace and then they seemed to wake up at a relatively civilized time.
With one kid it isn't too bad, but when you have multiple kids they tend to be up with whomever is the earliest riser, because they make a lot of noise when they get up and wake everybody else.
I'm 33, definitely more of a night owl but if it's sunny out I'm pretty likely to be wide awake at 6am after going to bed at 1. Black out curtains made all the difference for me.
I believe all babies are different, so luckily our first have been kind to us this far with her sleeping habits and mood.
My hypothesis is that all the nonsense about kids needing 12 hours of sleep/"more than adults"/early bedtime is just that, started by parents who wanted some time to themselves at night and perpetuated through convention.
Our kids started sleeping, waking up and generally behaving better once we stopped enforcing arbitrary bedtimes.
A parent you make insecure by gaslamping the hell out of them, suggesting there's something wrong with their child if it doesn't conform to xyz is going to spend a lot of money on solutions to problems that don't exist.
We made tons of these mistakes the first time around. For the rest, we just bought diapers, formula and toys and let nature take its course. They turned out fine.
Baby books are the Fox News of childrearing-- lots of bold opinions and advice, most of it dubious/inapplicable.
What the books never tell you is that sure, there may be average numbers available, but the STANDARD DEVIATION is HUGE. No baby is average. My wife was convinced our first child had sleeping issues because he slept 2 hrs less than average. It turns out that's just who he is, he sleeps a lot less than most kids, but still at the bottom of the range of healthy. All it does is fuck with your head, so just take a cue from other parents around you.