[Gabrielle]

Ha-ha, you're so right about the West!

If you can, try doing your walks in a rough trail or better, a mountain, using a 5 to 10 pounds filled backpack to raise your mass center and that should put stress on the upper abs and floating ribs because you are going to be constantly seeking balance and that's where the exercise is.

And if you want to look for sports to develop those muscles in particular including quads, glutes and hips, there is cross-country skiing with skating skis for intensity, ice skating and roller-blading. I remember I had those giant thighs and bum as a teen haha.

I still have all my gear for those sports and I might take them out this winter after a very long time. Anything that could keep me away from the yoga mat! 

Good advice. Yes, hills/mountains are def great for building that bottom. I never really thought about a 5kg backpack affecting my abs/ribs. I
f that's the case I will def be adding that to my regimen.
I've never done winter sports before but I have rollerbladed when I was was a kid. I loved the roller rink
My choice for sports when I was younger was baseball, basketball, and various martial arts.
Honestly I think my hips and rib cage got distorted mainly from playing all these sports but never properly stretching or taking care of my body.
Well, I'm glad I started going to massage places (although expensive) and studying the human body otherwise this could turn into a serious problem in my old age if not corrected.

Speaking of yoga mats, I haven't used mine a long time.
I was heavy into yoga because of the club we had at school but after that club ended prematurely in my junior year I stopped going.
I guess I was there more for the friendship but I did experience the physical benefits.

what about squats?