Match the heading to the short text.

This is a sport of racing over rough ground on special motorcycles. It is one of the most physically demanding sports as riders use almost all of their muscles and shift their weight to balance throughout the whole ride.

• MOTOCROSS
• FREEDIVING
• WINDSURFING
• MOUNTAIN BIKING
• PARAGLIDING
• SPEED SKIING
• ZORBING
• STREET LUGE
• ROCK CLIMBING
• WHITEWATER RAFTING