Birthing, by design happens best in Parasympathetic Nervous System. This the ‘Opposite” system to the Sympathetic Nervous System that’s in charge of fight flight and freeze/ the parasympathetic nervous ( PNS) is in charge of rest, relaxation, digestion, snuggling, love making and birthing. When we prepare for birthing with hypnosis we learn to quickly and easily “tap into” the PNS to manage contractions. We condition our body/mind to relax through the contraction which enables each contraction to be more effective.
In my experience there is no better tool for pregnancy and birthing.