Sarvangasan(shoulder stand) also presses the throat and it stimulates thyroid. Another technique is jalndhar bandh(Throat center lock) this compresses the throat and helps in reducing blood pressure.This is specific technique for blood pressure.
If we look it from another angle, Root lock and navel lock increases blood pressure. and jalandhar band (Threat lock) reduced blood pressure, nullifying the side effect of both the bandhas(Locks).
