Ключевые слова: action, active, adrenaline, adventure, athlete, balancing, bicycle, bike, biking, challenging, cliff, cycling, danger, downhill, elevated, enthusiast, exercise, extreme, fearless, fitness, helmet, jumps, landscape, man, maneuvering, mountain, nature, obstacles, outdoor, outdoors, overcoming, physical, recreation, riding, rocky, rugged, skillfully, speed, sport, sports, terrain, thrill, thrill seeker, trails,