I'm in the same boat as you. My diet is mainly Mediterranean, and blood tests show no abnormalities (I do it 1-2 times yearly). I don't exercise but score 250-400 Heart Points weekly by walking or intense hiking. I firmly believe that stress is a primary factor in hypertension. If you are an anxious person, maybe even more so. Another factor to blame can be loneliness; still hoping for credible research that shows any correlation.

Unfortunately, I don't see a path to eat, meditate or exercise out of it if you in the good shape already. But controlling sodium intake can help to offset some numbers. To control it, I take medications and must continue taking them permanently.