Might this also help with curbing symptoms of PTSD as the polyvagal theory by Dr. Stephen Porges seems to suggest? I’m aware he places his research in the context of autism and BPD. However, from taking a hard look at patients suffering from BPD, I have developped the understanding that PTSD and C-PTSD might mimick some symptoms also found in patients suffering from bi-polar personality disorder. (I still cringe at these classifications and had rather dismissed them all. But for the sake of discussion, I feel pushed to employ them).