Why wife constantly hits me, is this abuse?

Edit: She tells me she's like this cause she grew up with three brothers and she was the only female so this is what she knows and does when frustrated.
I've been with my wife for almost 8 years. Anytime she gets inconvenienced with me or annoyed with me, she hits me as hard as she can repeatedly. She doesn't care where the hits land, which means I've been hit in the back of the head, the face, and everywhere else on my body. It doesn't really hurt cause she's a small woman and I'm a 6 ft, 200 pound man, but it's really starting to bring me down mentally. I just don't know what to do, idk if I want to consider it abuse cause I'm not actually getting very hurt physically by it. And anytime I bring it up when she's in a good mood she just laughs it off.
I know I can be a pretty annoying, over the top person with my personality sometimes. But I don't know how much longer I can take of it. Any time someone lifts there hands around me I flinch out of instinct.
I should mention that I truly do love this woman and we are about to have our second child together. When things are good they are really good. But it seems like getting hit and punched is almost a daily occurrence now.
Has anyone other males dealt with this with their significant others? I'd love to hear about it.


Source.

Hi! I think your wife is an impulsive person. By virtue of her character, she often commits stupid things, but quickly cools down and she becomes ashamed of her act. I think if you love her and she loves you, then you need to look for a way out. For example, periodically gently explain to her that you are very hurt mentally by such actions of hers. I think she'll understand in time.