Stretching the hip flexor is important when strength training the legs and hips. Learn how to do hip flexor stretch exercises in this stretching and flexibility video. Take action: cradle one foot with both arms and lean back, curl up other leg for advanced stretch, twist right leg over left hip, and repeat on both sides. Tom Clifford, the instructor in this how-to video, has a degree in physical education, fitness and health from Eastern Michigan University, where he ran track and cross-country. Tom has worked as a personal trainer for two years. He also has a separate business where he coaches runners and triathletes for upcoming events. He currently works at Gold's Gym in Wilmington, North Carolina. Watch this video exercise tutorial from Live Strong and learn how to do a hip flexor stretch.