Well I don't know what's typical for women but I would say that before kids, my hobby was reading. Once my first kid was born, there actually was never any time to read, at least not in the way I like to read, which is to settle in with a book and get deep in to it for hours. My MIL suggested I read for 20 min every night before bedtime (as that's what she does, and in her eyes, whatever she does is the correct way to do that thing) but I found myself re-reading the same few pages over and over every single night. I couldn't remember having read those pages. Reading in "fits and starts" is simply not how my brain works and it ruins the experience for me. Until my youngest became a teenager a couple years ago, the only leisure time I ever had was "fits and starts," beginning with babies that would cry as soon as you got to the good part of the book, to toddlers that would get into trouble as soon as you turned your back, to early school age kids that would get the flu/stomach flu/pneumonia and need constant trips to the doctor and supervision of fluids etc, just as you'd cleared your schedule and booked them for a day out with husband so you could have a nice, soothing Saturday with your book, and so on.
I do read a lot of mumsnet but it's a habit I got into because it's something you can dip into, and out of, and it doesn't need a lot of focus. It's very compatible with the constant interruptions that come with raising children, unlike practically any other hobby.
Time use surveys indicate that women have "more leisure time" than men. I thought that was really strange, as every mum I know has no leisure time, while the husbands are always off doing their hobbies. But digging into it more carefully, time use surveys count "waiting" as leisure. So even if you are sitting in your broken down car on the side of the road, waiting for a tow truck, that is still counted as leisure time in time use surveys.
So I think for women, so much of our "leisure time" is like that. You have a doctor appointment at 1:30 pm for your child's possible tonsillitis. You pick them up from school, go to doctor, wait 30 minutes in waiting room to be seen, possibly surrounded by other sick children. That's leisure time!!!! What kind of hobby are you supposed to do in that so-called leisure time? Is it at all enjoyable? Not really.
I think time use surveys should create a new category called "contaminated time" to account for this phenomenon. There is a huge difference between the leisure experience of being able to take off all of Saturday to play golf, vs the "leisure" of having 15-30 min here and there because you are stuck in your kitchen waiting for the washer to finish or waiting for your stew to be cooked, or where you are always subject to each person in your family coming up to you at 7 minute intervals, asking: Mom, where's my soccer kit; honey, where's the scissors; mom, where's my chemistry test; sweetheart, where's my wallet; mom, can you take me to Bobby's house? Honey, I invited my parents to stay next weekend, can you make your Peking Duck, it's their favorite!