I did the non stress thing today, and his was staying right abotu 135-140 the whole time, well I attempted to sit up, and the reading shot up to 208! It scared me, it didn't occur to me that it was because I sat up, it messed up the machine, and my contraction thing went from 18 to 45! Well the nurse came in a minute later and saw the big spike, and said, well then. Then she said, did you sit up? I was very relieved when I realized that was all it was!