Possible Clues:

• ...about worn out - went to bed
• Needing another sleep, went to bed
• In bed, withdrew
• Soldier tried swimming and gave up
• No longer active in work or profession
• Called it a career
• About ready to drop after work?
• Brightly coloured clothing to dress up in bed?
• Gone to bed: it's not working
• Withdrawn, as old car in America could be