I've been seeing several clients right now with complaints of piriformis syndrome. Most of them tried doing figure 4 stretching, pigeon stretching, etc. found online that supposedly relieves symptoms. But yet, they still didn't get the long term results they were hoping for, and came to me for help. So let's do a little digging for answers.
So here's the piriformis. It runs from the front of the sacrum to the femur and it's main job is to rotate the hip outward. The sciatic nerve runs either under the piriformis or through it. "Piriformis syndrome" occurs when the piriformis gets tight and puts tension on the sciatic nerve, causing pain in the buttocks, hamstring, and sometimes even down to the foot.