Less sleep an adaption to surviving in wild?

[Claire.]

Sleeping less in old age may be an adaption to surviving in wild

Many dangers stalk the bushlands of Tanzania while members of the Hadza people sleep, yet no one keeps watch. There is no need because it seems that natural variation in sleep means there’s rarely a moment when someone isn’t alert enough to raise the alarm.

Read more: New Scientist

[DebDandelion]

Well they adapted so they wouldn't die. Good on them. My dad was a very light sleeper, literally a drop of a.pin had him alert. I could sleep like there was no tomorrow.  

When I married I still slept like a baby, a bomb could explode next to me and I won't stir. And then I had children...now I wake at a drop of a pin,  and first instincts always to check on kids. I find that if I don't hear a sound that I fell asleep with during the sleep phase I also wake up.

Edited July 12, 2017 by DebDandelion