One of the most frightening prospects is having your garage door open involuntarily. It's cool and helpful when you press your remote and intentionally do it. However, when some unseen force seems to open your garage door without your consent, then things start to get a little weird. Is your garage door opening by itself? Sometimes, your door can do this, and it can make for a terrifying experience. You probably want to know why this happens, and you are in the right place if you do.