After sleeping, you'll receive a message stating that "You feel Well Rested":
What effect does feeling Well Rested have?
Arqade is a question and answer site for passionate videogamers on all platforms. It only takes a minute to sign up.
Sign up to join this communityAfter sleeping, you'll receive a message stating that "You feel Well Rested":
What effect does feeling Well Rested have?
Well Rested is a temporary perk that gives you a 10% XP bonus for a period of time. The wiki lists this period as being 12 hours. You can see the perk on the perks page in your Pip-Boy.
To add on to the previous answer, You have to sleep in a bed that you own for one hour and you will get the +10% experience for 8 hours in game.