Fighting in my sleep

I'm so glad my husband was traveling and I slept alone last night. I dreamt about being chased and attacked. At one point, my "attacker" was holding my head with his arm outstretched. I flailed my arms trying to hit him, but couldn't reach him. (You know - kinda like a big kid taunting a little one. :) I ended up kicking him HARD. And woke up kicking and hitting the air. Twice last night, I woke up punching or kicking as hard as I can. I can't tell you why I had these dreams. Weird stuff.... I'm just glad my husband wasn't here to accidently become my punching bag!