The bonus affects skillgain and stamina regeneration.
You can check the bonus with the new /sleep command.
==060922==
* Fixed the bug that crashed the server last night.
* Higher chance of lava eruptions
* You will now see normal information for beds with people sleeping in them.
* Cheese may now be used in cooking again
* You don
* You may now make sandwiches. They don
==060918==