Well that's a funny one. Too much focus on bums and boobs. Yes the bum was normal (wrinkly) and the boobs were jiggly, so probably were trying to say that that didn't matter, but the fact of the focus is inline with the women-as-sexual-objects attitude.
Having a bit of time in Belgium, I do see equal numbers of women out exercising. I'd say two reasons: it is expected here that women as well as men will be out working, there's little maternity leave and kids are usually put in (subsidised) childcare at 3 months old, every school has wrap-around care and there are lots of official organised holiday activities everywhere. (I don't like that solution myself, I don't like families never seeing each other).
The other, the question of looks: certainly that is not an issue in Belgium. The whole place is refreshingly unobsessed by what people look like. It's one of if not the best thing about it. Honestly, the preference for 'relaxed' over 'trendy' is really obvious particularly among the student-age group. I hate the way UK came to obsess over looks, and don't completely understand it. If that's what's stopping women from doing what they want to and would otherwise be dong, then, very very bluntly, that's pathetic.
The associated report did mention just 'fear of being judged' though, and that can cover a multitude of sins. Starting with not being a good mum with kids, as House implied.
For me with young kids the big problem is time, family time and not having any social support - which seems remarkably common nowadays.