Deja vu is the feeling that what you’re experiencing has already taken place. Chances are you’ve had deja vu at least once in your lifetime. It’s a bizarre, unsettling, and sometimes eerie occurrence which is difficult and almost nigh-impossible to replicate. Believe it or not, the science around deja vu still remains a big mystery with only theories to guide our understanding. Still, we’ve made great strides in unlocking its secrets. Curious to find out more about deja vu? Here are 25 Facts About Deja Vu That Might Seem Familiar.