I did prenatal yoga in my first pregnancy with a hyper-cautious teacher who barely had us do anything, it seems. I've signed up to a different class now in my second pregnancy and it seems the teacher and expectations are much more ambitious with far less caution. Today we were doing poses like the various warriors, etc, with seemingly no adaptations for pregnancy. Based on my previous cautious teacher, I was doing the minimal version of these poses and really not coming anywhere remotely close to my full capacity or limits. I wonder though if my original teacher was wildly overstating the effects of relaxin and the risks of stretching too far, and whether I should just go with the flow of my new class to get a genuine benefit from it. I have no history of SPD or similar.
So my question is what others' experiences of prenatal yoga have been and how cautious or otherwise it are with it. I do feel like a nice semi-challenging class would have greater benefits in terms of actually making a difference to my body but I'm half-terrified of injury either.