It's a very good form of meditation. Improve the meditation technique and you'll sense the experience. For example, improve the breathing sequence and timing, to get an even rhythm of long sustained breaths. Calming music and incense helps some people, if your place is not normally quiet. Lay flat on the floor or on a 1/2 inch foam mat on the floor. Aim only for the calmness that results in the feeling of weightlessness. The brain will do the rest (if you want an 'astral projection'). Get plenty of exercise and do this when you are somewhat tired, especially at night or first thing in the morning. Good health and blood flow are essential. This for many is a basic form of meditation, rather than 'astral', but perfecting that tecnique is what's necessary for the out of body experience. Another group using this strategy refer to transcendental meditation, as taught by Maharishi Mahesh Yogi, though it was also a bit of a scam. The meditation scheme was very good however, and helped with the feeling of weightlessness.