This is basically what Matthew Walker (https://en.wikipedia.org/wiki/Matthew_Walker_(scientist)) sort of alludes to in his book, "Why we sleep". It's a good book. He specifically mentions hydras as well (iirc)... he's a neuroscientist who is a crazy maniac about sleep and he cites newest research and delivers a very clear message of urgency.
Lots of fascinating stuff there, highly recommend if you're interested.
Lots of fascinating stuff there, highly recommend if you're interested.