I fell over a fence trying to get into my house because I locked myself out of the front door, and experienced bright lights, a loss of gravitational awareness (or a zero gravity field) and witnessed three foggy characters that appeared to have bright auras surrounding them. They told me to come with them, but I thought I was dreaming and strangely replied along the lines of "I choose to stay here a little bit longer."
Regarding astral projection: I have also had experiences of which I have left my body during periods of meditating while drifting to sleep and gone for very long walks, spoken to other "travellers," and much more. I recommend meditation and reflecting on what defines a clear mind with clear logical thinking prior to attempting to project. If you decide to live a lifestyle like this it is also important to stay away from people who seem intentionally negative, and to elaborate on this: it is okay to attempt to open yourself to a friendship with someone you feel needs to find solace and help, however, stay safely away from people who intentionally hurt other people, because from my experience their disharmony has the capacity discharge itself into your aura. Thus, such disharmony has the potential to cause somewhat frightening effects on any astral projection that you, and/or friends, may attempt.
The last astral projection took place when I was about seven years old, and was somewhat nondescribable, as in: even if I were able to describe it I cannot nor will I describe it in any detail beyond telling you that if you are going to attempt an out of body experience or astral travel you need to be very careful and remember to maintain decent physical and emotional health.
Other tips for those experiencing Astral Projections include:
Clean your home first.
Let the sunlight fill your home.
Stay away from electronics even when they seem like they are off.
Attempt during daylight because the sun tends to provide a feeling of safety and comfort, etcetera.
Contemplate your actions prior to acting.
Try not to talk to strangers, and if they talk to you do not divulge more than they need to know; talk about what is simple and easy.
Do not play ghost. Do not attempt to stand in the way of moving traffic. (you could be in someone else's body and killing them)
Do not play ghost. Do not try to "possess" someone, regardless of their state of consciousness.
Do not jump off of high places expecting to take flight. If you were able to take flight you would have done so while on the ground.
Stay away from harmful media.
Form a covenant.
I learned these the hard way.