hypnobirth and yoga!

Hello I'm looking for abit of advice! This is my first pregnancy and I'm 3 months. My midwife teaches hypnobirthing and pregnancy yoga I'm really interested in it but no one I know has done it! Can anyone recommended if it helped during or after birth? I want to be as fit as possible for my rainbow baby especially as I'm a hairdresser and on my feet a lot :) any advice I would love thank you in advance and happy healthy pregnancies for us all xxxx