Heart is unpredictable thing. The more you learn what they want, the more it will confuse you. But heart is destined to be unpredictable. It got tachycardy whenever you feel something strange, like anxiety, excitement, physically and mentally drained, and being miserable. It got bradycardy whenever you feel like things going wrong, everything seems like gone away, hopeless, and you can't understand one of it and why they have to. Even the medical students just learn how they can be, not why they must be. All of us blessed to have heart as the one which equip the brain. Even though the brain sometimes become dominant. It just because people cannot be able to understand what it want. The brain specifically tell us what it want us to do and not to do. the brain with its capabilities to give logically thinking contribute more if we want to decice something, proven by appropriate reasons. It help us being rational while the heart don't. Even so.. Sometimes your logical thinking