While it is important to be physically active and improve fitness to help reduce blood pressure, that American Heart Association cautions that people taking medication for high blood pressure or a heart condition should consult their doctor before embarking on a vigorous exercise program. Further, you should call your doctor if any of the following conditions occur:

• You have pains or pressure in your left or mid-chest area, left neck, shoulder or arm, during or right after exercise.
• You tend to lose consciousness or fall over due to dizziness.
• You feel extremely breathless after mild exertion.
• You have developed chest pain within the past month.