I usually have two cups of coffee before my morning walk and another cup afterwards. However, I keep seeing conflicting reports about coffee and its effect on health and exercise. I am in good health, except for mild hypertension. Over half of the adult population in the U.S. drinks coffee, so any news about the popular brew, good or bad, has a large audience and receives a steady press. But as you have discovered, what is reported is often contradictory.
Caffeine elevates blood pressure response to exercise in mild hypertensive men.
Also, the effect of coffee on our physiology is not well understood.