Related Clues:

• Like one's favorite chair
• Warm and snug
• Worn-out
• Tuckered out or ready to roll?
• Very tired
• Plain tuckered out
• Pooped, perhaps
• Sick partner
• Ready to 126 Across
• Ready to roll? ... or not ready to roll?
• Out of energy
• Ran out of steam
• In need of a nap
• Physically and mentally fatigued
• Zonked