How should I make a script that will reset the character without changing its position?

The problem is that when you click the keyboard button, your character falls from the ragdoll but is still alive but I don't know how to reset back your character on clicking a different button, for example, when you click "e" the character will reset (go back to the normal) without changing player position (not going back to the spawn location, like when humanoid dies). I'm not really experienced and I don't know where to start.