SEX and he needs to orgasm. I was only at 1 cm and then I had sex yesterday and I got all the way to friggin 5cm but my labor stalled :( nurse told me it was because of the sex because Sperm has a high number of prostaglandins. Sex also triggers your body to release oxytocin. Another thing you can do is bounce on a yoga ball if you have one or do a ton of walking, i for one am in no shape to be walking haha.

Exercise , Walk , Kegel just to name a few