I used to do astral projection, but you should definitely not do it according to God. Saint Paul says in 2nd Corinthians 12:1-10:Also if you astral projection then you time travel
"I must go on boasting. Although there is nothing to be gained, I will go on to visions and revelations from the Lord. 2 I know a man in Christ who, fourteen years ago, was caught up to the third heaven. Whether it was in the body or out of the body I do not know—God knows. 3 And I know that this man—whether in the body or apart from the body I do not know, but God knows— 4 was caught up to paradise and heard inexpressible things, things that no one is permitted to tell. 5 I will boast about a man like that, but I will not boast about myself, except about my weaknesses. 6 Even if I should choose to boast, I would not be a fool, because I would be speaking the truth. But I refrain, so no one will think more of me than is warranted by what I do or say, 7 or because of these surpassingly great revelations. Therefore, in order to keep me from becoming conceited, I was given a thorn in my flesh, a messenger of Satan, to torment me. 8 Three times I pleaded with the Lord to take it away from me. 9 But he said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly about my weaknesses, so that Christ’s power may rest on me. 10 That is why, for Christ’s sake, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong."
This is possibly about an out-of-body experience, or astral projection, or some kind of dream or vision while in-the-body.
Astral projection is very, very bad (at the least), or there is no benefit to astral projection (at the best), because it can, in most cases, cause a demon to enter you if you are not specifically brought by the Lord, Jesus, to journey in such a fashion (as far as I can interpret based on this Biblical scripture). There are other people who astral project and they say they have seen the demons enter them for practicing this. When you start travelling through the spiritual neighborhoods of the astral plane, you never know whose doorstep, or neighborhood, or business, good or bad, you will land on, or come across, or step in, in my opinion.