A form of Time Travel where you don't physically go back in time. Instead, your body goes back to where it was in the state that it was, but you keep your memories from the future. The advantage is that, if done correctly, it neatly sidesteps many of the logical conundrums and paradoxes associated with time travel. The disadvantage is that your range of times to travel to is limited to the time your body can function for these purposes, a few decades at most. The other disadvantage is that it doesn't make physical sense. Unstuck in Time is usually a version of this.