If you believe this, you should be for investigating miscarriages to make sure women aren't exercising too much. Or requiring all frozen embryos to be unfrozen and implanted. Or banning masturbation. Or women who decide to waste all their eggs by not getting pregnant.

this is so obviously a straw man. The context of “potential life” is clearly fertilised life. The context of being “pro life” is obviously being against legalising intentional abortion. Exercise, even intensive, rarely causes miscarriages, masturbating is not aborting a child, freezing an embryo is not aborting a child.

The point is that even people who say they consider abortion to be killing a potential person stop short of the absolute logical end of that argument.

and

If anything, it highlights that morality isn't black and white

?

According to you, I cannot be Pro choice and advocate against people smoking, drinking, or taking drugs whilst pregnant then?

because that’s stops at the absolute logical end of having a right to choose what you do with your body.