After tummy tuck surgery, is it normal for your legs to go to sleep, numb, while you are asleep at night?

I had a tummy tuck with lipo in my flanks 1 week 1/2 ago. Ive noticed, at least 4 nights, my left leg goes to sleep, in the middle of the night. Is this usual or not? I wake up, and once i move my leg around it goes back to normal. I do sleep with the post op garment, and on a recliner.