try this experiment.... go to the drug store (unless you have your own meter) and take your BP. then go and do a hard cardio workout... then go back and check your BP. it **ought** to be lower for a few hours after a decent run, but no guarantee.
cardio, aside from lowering your BP in general in the long term, also makes your BP substantially lower for a brief (hours) period.
this makes physiologic sense, i have observed it in my own body, and this is the advice i've heard some government docs giving certain other government "workers" who have high BP so they don't get disqualified from their job, which is in high demand in these last few weeks...