Working and resting should be combined in a proper way, if it is done efficiently obviously you can better survive in the world of Darkfall, which is brutal and dangerous. Taking a rest when you feel exhausted can improve your regeneration in a fast speed. So, do not take a risk at your life, save it for tomorrow by taking a rest in a right time. Every activity drains your stamina. the system to take a rest is working like this: sheathe your weapon by pressing R, then use the Rest skill. This does not make you rest yet. This just loads the skill. Start resting is done by left click. Using the Jump key is to stop resting.