Hi everyone, Pete Tambroni here for a quick teaching tip.
I find when I teach German bow, the frog often slips to the base of the thumb. This limits arm and wrist flexibility.
To help the student keep the frog near the base of the fingers, I tell them to rest it on their ‘handlebar callous’. Almost all of us rode bikes as kids and got those callouses on the base of our fingers! So this gives the students a reference that has meaning to them – something they can relate to.