Related Clues:

• Walk to gym in smooth flat land
• It's plain sweetheart's rejected exercise
• Prairie, technically
• Grassy plain in central Europe or Asia
• Treeless plain of eastern Russia and Siberia
• Treeless grassland
• Grassland area
• America’s prairies are examples of this type of landscape
• Plain foot movement needed with gym
• Unforested Eurasian plain
• Siberian grassland
• Plain movement in audition
• Plain action of speaker