Whispers don't disturb sleep unless passive Perception score is 20 or higher and the speakers are within 10 ft. Speech at a normal volume does not disturb sleep unless passive Perception score is 15 or higher and the environment is already quiet Sleep in Medium or Heavy armor recovers only 1/4 of the total hit dice and does not reduce levels of exhaustion Whenever a 24-hour period ends without a long rest make a DC 10 Constitution saving throw or suffer one level of exhaustion, the DC increases by 5 for every 24-hour period without a long rest