In the old game, you could bind a "Sit" command to one of your keys/buttons and use it to sit down on any of the various benches across the game worlds towns. Screenshot shows a player sitting on a bench in Henesys. This allowed players to recover HP faster if they did not own a chair from a shop or not got one from a quest yet.

I've looked through the keyboard settings and couldn't find this keybind as an option.