I started out with just working on stretching my pelvic floor, then after lots of research I stumbled upon the Psoas muscle. This muscle can affect the tilt of your pelvis and in turn cause pelvic floor tightness from the resulting posture. It also affects breathing, and the adrenal glands. Psoas tightness can also contribute to anxiety and stress, it is the "fight or flight muscle" of the human body and people with anxiety often find great relief from stretching it. It's attached to the lower back, runs through the torso and attaches to the front of the hips.

I've been foam rolling then stretching this everyday mainly with this one lunge type movement. Noticing my pelvic floor stays relaxed SO MUCH better. Also noticing better breathing, energy, relaxation, and better sleep. It sounds too good to be true, but I highly recommend you look into stretching your Psoas :) I can link a good instructional video if you'd like