Tension/tightening of the vocal cords

Tension/tightening of the vocal cords heya guys, I would describe my stutter as having involuntary blocks and sometimes having difficulty pronouncing words, recently i started to really analyze what was going on and the only tension i feel is in my vocal cords, i was wondering if you guys know any exercises or solutions as to reduce the tension/tightening of the vocal cords so that i can speak more freely and experience less blocks. Thanks in advance guys ;)