I had slightly elevated blood pressure about 3-4 years ago when I was 23-24 years old. Bottom line, I have an extremely stressful job and had to learn how to manage the work/personal life balance.
I'm not sure if that's what you're going through, but if you're very career oriented like I am it's definitely a source of possible stress.
For me, lifting weights and running is healthy beyond the physical benefits. It also helps tremendously with managing my stress levels.
Just a thought.