Adding to my first reply, awareness now extends to body space and while they're far from large at presently a small B cup, they sometimes now hit a door or equipment as I move around a tight space, I now get reminded they're there.
Also when I get back to serious running I look forward to having a reason to wear a sports bra. I know bra chafe is a thing too but it can't possibly be as bad as nipple chafe / bleeding nipples :-(.
Similarly, hips, I've long envied female rock climbers the simple fact that a climbing harness laden with 20lbs of gear has a firm anchor about their narrower waist where I've forever had to be pulling a harness back up over my boy-hips on any route needing a big rack of gear. Now my harness fits me like a girl!!