The sudden spikes in blood pressure is of concern, especially if the spikes are very high. Fluctuations in the systolic blood pressure to the 140-150 mmHg range can be seen with minimal exertion or anxiety, and is most likely normal. Spikes that reach into the 180-200 mmHg range, however, are more likely to be abnormal, and does raise concern for conditions such as pheochromocytoma. This is a rare adrenal gland tumor that indeed "leaks adrenaline" and causes surges of symptoms that usually include racing heart beat, excessive sweating, headaches, and very high spikes in blood pressure. This is evaluated by checking levels of adrenalin compounds in the blood and the urine. If an abnormal level of adrenalin compounds is detected, the tumor can be detected through a variety of scans including CT scanning.
There are a number of other conditions that can mimic pheochromocytoma that should also be looked for, such as abnormal drops in blood sugar (hypoglycemia), certain prescription drugs that can influence the body's ability to process adrenalin, over-the-counter drugs or supplements that have stimulants in them, or recreational drugs.
With either symptoms of sudden rapid heartbeat or high spikes in blood pressure during exercise, one should be evaluated by a primary care physician prior to a physically demanding program such as boot camp. There are some rhythm abnormalities that are dangerous, and excessive physical stress can be unsafe. Exercising with the diagnosis of pheochromocytoma would also be ill advised. Depending on the initial findings, a consultation from an endocrinologist, cardiologist, or an electrophysiologist could prove helpful.