Cards on table - I am an exerciser. I run daily. However, the amount has varied over the years depending on my circumstances.
Anyone with small children or caring commitments is going to find it harder to fit in, as is anyone with a long commute. I don't think society acknowledges how hard it is for some women to find the time. I also think we undersell the activity involved in running round after small kids. I have a colleague with a toddler. My daily step count (taking out exercise) is half!
If you don't want to do more exercise stop reading now. My intention is not to make anyone feel lectured at I promise. However, if you'd like to but just struggle to get going, some things that helped me are below.
I found the only thing that helped consistently keep things up was building it in to daily routine. If you have to carve out time to exercise (eg Tuesday evening at the gym) it's so much harder to find the motivation if your tired and had a rubbish day. However, walking/cycling to work (or part of the journey if it's too long) can quickly become your new normal.
If you don't have a babysitter, activity at home can work. I was a single parent so did skipping for a while in my kitchen.
Think about your body clock. I hate getting up so don't plan exercise for first thing. I'm often up at 5 out of necessity but not to exercise!
Personally I avoid gyms. Despite my fitness they just make me feel inferior. Who needs that?
Get a step counter if you have small children. You will be amazed at how many steps you clock up on the go.
Count housework. Going up and down stairs a couple of times sorting laundry is exercise. Depending on the size of your house, so is vacuuming. Deep cleaning is definitely exercise as anyone who's ever been left a hot, sweaty mess after bleaching and scrubbing the shower knows!
Exercise is weird in that the more you do, the more energy and drive you have for it, but every little helps and women are particularly bad at underestimating how much exercise they take running round after everyone else. Sometimes remembering that and feeling better about it can help you get the motivation for exercise that is about you rather than meeting someone else's needs.