I have areas of both breasts that are numb which is sorta weird. I was never really sensitive on my nipples anyway so its never been a big deal, however if there teeth involved (yea, you know what I mean

), its ok for a few minutes then it just starts to hurt. I'm also not a big teeth or pinch person so again, not a big deal. But there are definitely areas after 6 yrs that are numb. The nipples absolutely do respond to sensation tho --- no problems there
To the whole thing about training chest after - I started competition training in April after a surgery in January. The whole scar tissue thing sucked moose bawls but i worked thru it. As far as has training affected me / where the girls sit now? No idea- I'm built wide anyway (not much in the way of cleavage despite 34D) so I still coudlnt' tell u if it made a difference. I bench 155 as a "best" recently. I've never not trained chest because of the implants.