I have been having problems with high blood pressure for a while now. My doctor put me on a low dose diuretic which has lowered it a few points. My issue is that the longer I sit the higher my blood pressure goes. Once I get up and moving around or lay down it seems to bring my blood pressure back down. I am a computer programmer and I sit all day writing code. Could I somehow be effecting renin excretion by sitting? Or something else? I also have sinus tachycardia my resting heart rate averages at about 110.

For example I've been sitting for an hour and my bp has shot up to 149/73