"As a retired nurse with controlled hypertension an elevation due to exercise is expected and normal. You BP fluctuates throughout the day according to your activity and one time elevations are not abnormal."

The symptoms I get subsequent to almost any kind of upper body exercise - which include a drastic, long-lasting elevation in blood pressure - are nowhere close to being "normal." The symptoms also include significantly worse tinnitus, light-headedness, anxiety and insomnia. Light exercise should not cause this.

"Also, you might consider stopping your sit-up’s since they cause more harm than good. Did you know that the military has stopped sit-up’s as part of their training."

Of course I don't do sit-ups anymore; first, because as I said, they have the same negative effects as e.g. push-ups; and second, because I know they're generally not good. And BTW leg raises and even chair yoga produce the same symptoms.