you dont need to have anyone watch your body when you astral project your body will literally send your astral body back into your physical body the second your body comes into any out of the ordinary contact, for example if someone touches you, or if a door near you opens or closes loudly
And astral projection can only be dangerous if you allow it to be dangerous, its like being in the city (really bad example), you stay away from some neighborhoods which are dangerous.
Actually Ellyphone, yes. If you have someone there to watch your body.. or as it is called "holding space" this is highly recommended.
If you do not have someone to watch your body ask your guides to do this.
This is an excellent question for these forums because many people don't know this.
The purpose of having someone watch your body, person or guide, is to protcet your body. When we exit our body in AP spirits are able to attach themselves or enter our body (NOT in a possessive way). But they cling to us in this way.
When we have a guardian (person or spirit guide) they hold space in order to keep this from happening.
This happens more often than we think (negative spiritual attachments). Sometimes in dreamtime this happens or when we interact with another person who just makes you feel awful.
Always! protect yourself when leaving your physical body into the spirit realm. You can never be too cautious as my teachers constantly remind me. :)
Astral projection is not dangerous and you wil be in no danger if someone is not watching your body. Nothing can possess or hurt you and you will go back to your physical body if something happens to it that is of concern.