[quote=supertinyking]
She can make it so she can't be hit by powerful blows, she has control over her body to the point where she could harden her body and finally the third.....well that is a secret. One that I have dropped hints to several times.
[/quote]

No, Luffy is able to make it so other people's power don't work. For example, he can punch a fire elemental to death. Basically, he can punch anything, even if it's made of smoke or something like that.