Drago Stress Test

My father went to get a stress test last week for his heart, and they told him that he’d have to get his heart rate up to 129 bpm. He started running on the treadmill, but his heart rate was too low. So, they increased the speed and incline. But it still wasn’t enough. So, they increased it some more. But it still didn’t work. At some point he looked like Ivan Drago from Rocky 4, running a sprint straight uphill. But it still didn’t get his heart rate fast enough. The doctor stopped the machine and told him to get off the treadmill. He told my father that there was nothing wrong with him if he could do that!