How do you know if you are really astro travelling...?

i dream quite often and they are so real that i will just walk off a high flight of stairs and i will fly were ever i want...or i will be walking and i can jump and if i concintrate hard enough i'm up in the clouds and i can see and go where ever and how fast i want....in my deeams this is at night or napping during the day...some times i'm trying to teach people how to do it as well