Temporarily changing bodies.

This issue has vexxed my Fiancee for quite a while now, she wishes to try and switch bodies with me, if it is even possible for a day. I would like to know if this is possible? And, we both live a long distance apart, and have no access to Satanic materials -I.E. pendulams, ouija boards (pardon my mispelling), candles, etc...Any feedback would be much appreciated!