In doing some string research, I came upon this website : http://www.aitchisoncellos.com/articleshome.htm
If you’ve ever wondered about the basic cello set up in the instrument itself and in your body, this is the place. For instance, did you know that, “The best humidity for your cello depends on the prevailing humidity level when the cello was last glued together and/or set up. Cellos are generally most comfortable between 40% and 60% relative humidity. 30% is too low for comfort and 20% is hazardous. ”
Or…
“some cellists bear most of their weight down through one side of their bodies when playing: ‘This results in a corkscrew effect, twisting the spine as we move forwards with the right shoulder and backwards with the left. Ideally the shoulders and pelvis should be in line with each other when playing.’”
Or…
Borrowed from Aitchison Mnatzaganian cello makers website
“The currently accepted explanation of the wolf note is that it is caused by the massive vibrations of the cello body associated with the cello’s simplest and most fundamental mode of vibration or resonance.
When we attempt to bow the cello at or near the note of this resonance (usually between E and G) we get feedback from the intense vibration of the cello body into the strings, disrupting the action of the bow on the string and causing the sound to die momentarily. However, as soon as the vibration dies down, the bow – which is still moving – re-activates the colossal vibration. This cycle of activation and disruption repeats several times per second, producing the oscillating ‘howling’ wolf note.”
So cool!