Now it would be interesting to see if both type of short sleeper from both gene similarly don't suffer any health effects and have the same health benefits, or if it's only one of them.
The way this gene effect was described, it doesn't make sense why they'd see no negative side effect, since it promotes "waking up". The other gene felt more like it allowed the brain to sleep more efficiently and require less sleep.
I'm interested in "how much less sleep" and two copies of the gene as compared to one.
Wonder what you would get if you were homozygous for both short sleep genes. Both of them seem to shave off about two hours, but my guess is that they wouldn't perfectly "stack" and you'd end up needing five hours.
The way this gene effect was described, it doesn't make sense why they'd see no negative side effect, since it promotes "waking up". The other gene felt more like it allowed the brain to sleep more efficiently and require less sleep.