Some people believe that the human heart is located on one side of the body but actually the heart is really located more in the center of your body but only part of the heart being located just behind and slightly left of the breastbone.
The human heart is around the size of a fist and only part of it is located to the left of your body while the majority of the human heart is located in the center of your chest.
So if someone tells you your heart is located to the left of your body then they're partly right but most parts of the heart is located near the center of your body under your ribs.
I used to think the whole human heart was always located to the left but a doctor told me that it actually was more located in the center while only part of the human heart is located to the left of the body.