Related Clues:

• On one's back
• Lying on one's back
• Face-up
• In the backstroke position
• Like a luge rider
• Flat on one's back
• Lying face up
• Recumbent
• Lying flat
• Lying face-up
• Prostrate
• Back down?
• Back-up
• Lying on the back
• Lying face upward