labour time is genetic??

[Freya]

My mums were 8hr, 5hr and 90min.
Mine so far were 3hr and 90min. No idea about #3 as I havent had him yet but Im expecting mega fast lol
My sister is yet to have any kids.

I think that genetics CAN influence it but I also think other things factor in - how you labour, fitness levels, weight, bubs position, spontaneous or induced, personal mindset, use of drugs etc etc etc

We really dont know how our bodies will react to labour until we've done it atleast once! I have such quick labours because a) Ive dialated before I went into labour and have weeks of pre-labour cx's, and b) my cervix is a fast dialator. Just luck really.