Braxton hicks at night

So last night I had about 6 or 7 Braxton hicks over a three hour period, which I know is fine but they kept me up because I wanted to make sure the timing wasn't regular. I know I was a little dehydrated cause my legs were feeling crampy and I had been on my feet for most of the past two days. I found once I turned on my side they stopped but I was wondering if anyone else noticed sleeping positions or any other trends that caused their BHC? Thanks!