It is as real as anything else you can experience.
By the way, before anyone suggests that we only experience this because we have read the details elsewhere, and that is why it all happens for people, I started having this happen to me when I was very little, and had not heard or read anything about any of it. In fact I spent the first 7-10 years of my experiences to myself thinking that either everyone else had this sort of stuff happen to them, and just did not talk about it, or that I was nuts- or a combination of the two. So, I was not copying anything I had read about. I had to work through it totally on my own.
By the way, before anyone suggests that we only experience this because we have read the details elsewhere, and that is why it all happens for people, I started having this happen to me when I was very little, and had not heard or read anything about any of it. In fact I spent the first 7-10 years of my experiences to myself thinking that either everyone else had this sort of stuff happen to them, and just did not talk about it, or that I was nuts- or a combination of the two. So, I was not copying anything I had read about. I had to work through it totally on my own.