I had this issue in the past, particularly APT. I even wrote a thread about it then: thread-22465.html
I don't have perfect posture, so I still have it a little bit. But I mostly solved it. It's no longer as bad as it used to be.
One big component of APT and lower back pain is tight hip flexors. While psoas is part of the category, the quads are also involved in hip flexion, particularly the belly that runs down the centre of the thigh. A great way to get them loosened up and relieve the tension that results in APT is to foam roll... Directly on the upper thighs.
If it hurts a lot, it's because it's especially tight. It shouldn't hurt much at all. Take it slow. While different from stretching, the principle remains the same. It's not how much tension you apply, but the amount of time under tension that matters.
I don't have perfect posture, so I still have it a little bit. But I mostly solved it. It's no longer as bad as it used to be.
One big component of APT and lower back pain is tight hip flexors. While psoas is part of the category, the quads are also involved in hip flexion, particularly the belly that runs down the centre of the thigh. A great way to get them loosened up and relieve the tension that results in APT is to foam roll... Directly on the upper thighs.
If it hurts a lot, it's because it's especially tight. It shouldn't hurt much at all. Take it slow. While different from stretching, the principle remains the same. It's not how much tension you apply, but the amount of time under tension that matters.