[Mikhail_Edoshin]

There's quite a body of knowledge on body mechanics that doesn't seem to get much reflection in scientific publications. The only possible exception is the Alexander technique, and even this one is very much obscure. Not because it's secret or something like that, it's that these things don't seem to be searched for.

BTW, healthy writing (according to Palmer) is very similar: you rest your elbow and little finger on the desk and write by floating your whole hand above in a very relaxed way.

[vemv]

I wouln't rest my elbow (or forearms) on anything, it's an unnatural pressure.

Instead I place the keyboard at the border of the desk, so I can't possibly lean my arms on the desk.

Granted, you have to use more force to keep your whole arms lifted for hours, but it's good that you can know when do you need a rest.