Hello, Thanks for writing to Health Care magic, I am Dr , Muhammad Ahmad , I have read your question closely, I understand your concern and will be helping you with your health related problem. 1) what side of the chest do your put your hand on to feel the heart beat? Left side in fifth intercostal space, and simply speaking its just below the nipple. 2)Is it the front? Yes it is felt in front. 3) whats the technical word for it? It is called as apical beat/ apex beat. 4) is your heart as big as your fist? why is this so? It s just a rough estimation , yes it s almost as big as your fist and it is because size of every organ is according to body size if you are big your fist and heart will both be big a dwarf will have fist and heart both small. 5)how many times does a human heart beat in a day? It beats 72 times in a minute , beats 103680 times in a day . 6)how many times does it beat in a year? 37843200 times a year. 7)how many times in a 22 year old s life? 832550400 times till 22 years 0 days 0 seconds of age. 8)how hard does the heart squeeze blood into the chambers? Hard enough to push it till farthest organs of body. 9) is your pulse stronger as a child? Yes beats more times compared to adult heart. 10)what in diameter is the largest artery in the body and the aorta? Aorta is the largest artery it has a diameter of 2.1 cm square. I hope this answered your question, If you have more queries I am happy to answer you. Regards. Dr.Muhammad Ahmad