Feeling tired, overloaded, and exhausted all the way through. You may feel tired and go to sleep naturally, but, in some cases, it’s just another alarming sign of angina. This symptom does not usually last for a while, so you have to mind it. Once the situation with angina passed, most of the patients share that they turn rather fatigued for 60 minutes or more. It lasts until their bodies return to a slower, normal breathing and mental/emotional condition.