All three ideas sound interesting: new keyboard layout, sleeping 4 to 4.5 hours and having a 75- 90 min nap, and 30 minutes focused work then 30 minutes play – repeat.

I do the 30/30 work/play thing informally and unstructuredly, and feel guilty for it. I am totally going to try that. I get the psychology behind that one. I do wonder if it works with physical tasks. I will research that and the other ideas.

Not everyday I learn something new, but today I did, thanks!