Can a pulled chest muscle be mistaken for palpitations?

Pull vs Palpitation: Palpitations generally refer to the heart muscle and describe periodic rapid accelerations of heart rate. Palpitations normally occur with vigorous activity. Some sensitive people can develop palpitations due to caffeine or thyroid disorders at rest. Most commonly a pulled chest muscle is localized to the chest wall and hurts when pressed or with deep breathing which makes it unmistakable.

Palpitations: These are caused by many things. Stress, excitement, irritants both physical and chemical, pressure like a hiatal hernia or esophageal push or pull, and primary heart things, the causes are very many in number.