As a survivor of trauma-based MK Ultra who experienced dissociative states (out of body experiences), let me tell you that it is very scary because if it happens once involuntarily as it did for me, it can and does happen again. For me it was in stressful situations where you need to prioritize your physical safety. So disassociating can lead to paralysis in life-threatening moments, and also massive anxiety attacks.
Do not try this alone and especially if you suffered childhood trauma.