All things, from all times, past, present, and possible futures all exist
in the same place, separated by frequencies which we interpret as time,
distance, etc... This suggests that all information from all times exists
in the same place...always.
My theory on the yogi with the ability to "turn back time" to rejuvenate
and repair their body, is that they don't actually turn back time, but
"replay" the information that exists at different frequencies around us, in
reverse-time order.
It is kind of like making a recording on a tape. The event has already
happened, but still remains on the tape. If you want to experience what
happened you play the tape, if you want to experience it in reverse, you
play the tape backwards.
It would be far easier to do this than to try and reverse time itself.
Then again anything is possible.
MR