Excerpted From "Cello-Brained Blogspot":
Posted by Things 4 Strings on Jan 29th 2019
Originally posted on 2009-09-07

.....I've found that my tenseness has appeared again, but this time in my hands, which makes my hand cramp up easily especially during faster bowing.
Tenseness seems to occur every time I learn something new! I used the Cellophant from Things 4 Strings for awhile, which helped me immensely.
Before using the Cellophant I didn't know how a relaxed hand was supposed to feel like.
Now that I know, I can adjust my hand until I feel the "relaxed-hand feeling."