My DD is 20, tall and slim (size 8) but not that fit in her opinion although she does walk a lot. She is on the pill. I took her blood pressure to try out my new BP machine and the readings have been quite high (in the red band on the machine). Today was 102/91. Yesterday was 110/98. Mine and my DH's readings have been normal so I think the machine is ok. DH thinks her BP is higher as she feels she is unfit. But surely for a slim 20 year old BP should be lower than it is? I have suggested she goes to see nurse at university medical centre to get it checked out but she is reluctant to go as she went a month ago for renewal of the pill prescription and bp was 110/86 and she was told it was normal. She is just home this weekend but back to uni tomorrow. Any medical professionals able to offer advice?